Desert campground among cholla cactus below rocky mountains at Agua Caliente County Park, Julian, California
Day pools

Agua Caliente County Park

Julian, CA

A San Diego County camping park surrounded by Anza-Borrego Desert State Park, with three geothermally heated mineral pools: an indoor pool with age limits, an outdoor pool and a children's pool. The park is open from Labor Day weekend to Memorial Day and offers hookup sites, tent sites and seven cabins. Non-campers can use the pools for a small per-person fee.

From $7View
Aerial view of the palm-lined pool and hot tubs at the hotel at Aqua Soleil Hotel & Mineral Water Pool, Desert Hot Springs, California
Resort & lodging

Aqua Soleil Hotel & Mineral Water Pool

Desert Hot Springs, CA

A hotel on Palm Drive with a large mineral water pool at about 88F and two jetted mineral pools at about 102F and 104F. The pools are for registered guests, who may bring up to four day guests. Dogs are allowed for a fee.

Overnight guestsView
Terracotta-colored building with a shaded pergola and flowers at Avila Hot Springs, Avila Beach, California
Day pools

Avila Hot Springs

Avila Beach, CA

A historic hot springs on Avila Beach Drive, two miles from the beach, where oil drillers struck an artesian hot well in 1907. Its 20-by-20-foot mineral soaking pool is about 2 feet deep and kept near 104F, beside a large heated freshwater pool with double slides. Day passes cover both pools, and the site also offers tent and RV camping.

From $29View
Woman resting on the edge of a concrete mineral pool at Azure Palm Hot Springs Resort & Day Spa Oasis, Desert Hot Springs, California
Resort & lodging

Azure Palm Hot Springs Resort & Day Spa Oasis

Desert Hot Springs, CA

A resort and day spa with a 100 by 40 ft mineral pool and four indoor and outdoor hot spas kept at about 99-104F. The Oasis Day Pass covers the pools, sauna, lounging areas and yoga studio from 9am to 7pm. Guests must be 17 or older.

Minerals1,090 mg/LSodium–sulfate
From $79View
Resort & lodgingSeasonal

Bashford's Hot Mineral Spa

Niland, CA

A seasonal RV park near Niland with six mineral baths, a heated pool and a heated jacuzzi. Its website lists day use at $15 per person from 10am to 4pm and an Oct 15 to May 15 season, but the rates page carries a 2014 date.

Minerals3,290 mg/LSodium–chloride
From $15View
Garden courtyard with a fountain in front of a long green-roofed inn at Benton Hot Springs (The Inn at Benton Hot Springs), Benton, California
Resort & lodgingClothing opt.

Benton Hot Springs (The Inn at Benton Hot Springs)

Benton, CA

A historic ranch and inn in the old mining town of Benton, where spring water rising at about 140°F feeds private hot tubs at numbered campsites, Inn tubs and rental houses. Every tub is booked overnight; the inn offers no day use or hourly rentals. Tub sites take tents or RVs without hookups, and clothing is optional at the sites with discretion required.

Call for pricesView
Modern spa building fronted by palms and tropical plants at Beverly Hot Springs, Los Angeles, California
Bathhouse

Beverly Hot Springs

Los Angeles, CA

A Koreatown bathhouse that describes its water as 100% natural mineral hot spring water. Admission covers gender-separated hot pools, cold plunges, steam rooms and dry saunas for up to two hours, with massage and facials sold separately. A co-ed pool is listed as coming soon.

From $50View
Shaded mineral pool with curving steps and palm trees at Caliente Springs Resort, Desert Hot Springs, California
Resort & lodging

Caliente Springs Resort

Desert Hot Springs, CA

A 55-and-over RV resort on Dillon Road with natural hot mineral pools and spas, including a tub at about 104F, plus a sauna. The source water rises at 115-146F. The pools are for resort guests, and no day pass is published.

Minerals1,245 mg/LSodium–sulfate
Overnight guestsView
Guest with a bicycle outside the retro motor lodge rooms at Calistoga Motor Lodge and Spa, Calistoga, California
Resort & lodging

Calistoga Motor Lodge and Spa

Calistoga, CA

A retro-styled motor lodge at the north end of Lincoln Avenue, now part of JdV by Hyatt, with outdoor pools and a hot tub filled with mineral water from Calistoga's geothermal springs. MoonAcre Spa on site offers mud baths and massage. Day passes are sold through ResortPass.

Minerals668 mg/LSodium–chloride · lithium · high silica
From $56View
Lap pool and lounge chairs with Napa Valley hills behind at Calistoga Spa Hot Springs, Calistoga, California
Resort & lodging

Calistoga Spa Hot Springs

Calistoga, CA

A downtown Calistoga resort built around four outdoor pools filled with geothermal mineral water from a well beneath the property, ranging from about 80 to 104°F. The covered, jetted octagonal Jet Pool is adults only. Pools are for room guests and people booking spa treatments, which include traditional volcanic ash mud baths.

Minerals646 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Soakers in an indoor mineral pool under round skylights at Catalina Spa & RV Resort, Desert Hot Springs, California
Resort & lodging

Catalina Spa & RV Resort

Desert Hot Springs, CA

A gated RV resort with odorless hot mineral pools and hot tubs across five swimming areas at its Lower and Upper Clubhouses. RV sites start at $45 a night. The pools are for registered guests, and an ADA pool lift is available.

Minerals1,410 mg/LSodium–sulfate
Overnight guestsView
Outdoor mineral pool with a desert valley view at Death Valley Hot Springs, Tecopa, California
Resort & lodging

Death Valley Hot Springs

Tecopa, CA

A Tecopa Hot Springs Road resort with a large outdoor geothermal pool ringed by four smaller hot pools of different sizes and temperatures. Four private pools with their own showers are also offered, and everyone on the property needs a $35 guest pass, valid 9am-10pm. Lodging is in bungalows, with an RV park and tent sites.

Minerals2,020 mg/LSodium–bicarbonate · high silica
From $35View
Palm trees reflected in the hotel's main pool at Desert Hot Springs Spa Hotel, Desert Hot Springs, California
Resort & lodging

Desert Hot Springs Spa Hotel

Desert Hot Springs, CA

A mid-century hotel on Palm Drive, operating since 1950, built around a courtyard of natural hot mineral pools. It sells pool day passes for 9am-8pm and runs a cafe, bar and spa on site. The hotel's day-pass page and its FAQ disagree on price and minimum age, so confirm before visiting.

Minerals985 mg/LSodium–sulfate
From $15View
Overhead view of a swimmer in the mineral pool at Dr. Wilkinson's Backyard Resort & Mineral Springs, Calistoga, California
Resort & lodging

Dr. Wilkinson's Backyard Resort & Mineral Springs

Calistoga, CA

Calistoga's resort and spa running since 1952 on Lincoln Avenue, with three geothermal mineral pools, one indoor and two outdoor, set at about 85, 95 and 104°F. The 104°F Hot Spring is adults only. Day visitors can buy pool passes, daybeds and cabanas through ResortPass, and the spa still offers its original mud bath, The Works.

Minerals676 mg/LSodium–chloride · lithium · high silica
From $90View
Red cabins along the edge of a pine forest meadow at Drakesbad Guest Ranch, Chester, California
Resort & lodgingTemporarily closed

Drakesbad Guest Ranch

Chester, CA

A historic guest ranch in Warner Valley in the southeast corner of Lassen Volcanic National Park, reached by a partly gravel road from Chester. Guests stay in lodge rooms, cabins or bungalows with all meals included, and guided rides go to Boiling Springs Lake and Devils Kitchen. The ranch's pool has not reopened since the 2021 Dixie Fire, and the operator says it is still in the planning stages.

Minerals588 mg/LCalcium–chloride
Overnight guestsView
Moroccan-style inn and pool lit up at night beside a fire at El Morocco Inn & Spa, Desert Hot Springs, California
Resort & lodging

El Morocco Inn & Spa

Desert Hot Springs, CA

A small Moroccan-themed inn for adults 21 and over, with a natural mineral-water swimming pool and a large covered Jacuzzi-style spa. Day visitors can book a pass that includes two far-infrared saunas, a locker, towel and robe. There is no restaurant, and guests may bring their own food and drinks.

Minerals706 mg/LSodium–sulfate
From $50View
Clifftop lawns and baths above the Big Sur coast at Esalen Institute, Big Sur, California
Resort & lodgingClothing opt.

Esalen Institute

Big Sur, CA

A retreat center on the Big Sur cliffs whose hot springs baths sit above the Pacific, fed by springs that emerge at about 119F. The baths have four communal stone tubs, individual claw-foot tubs and an upper-level tub with a lift, and they are clothing-optional. They are open only to overnight guests, and Esalen's public night-bathing reservations are currently closed.

Overnight guestsView
Mineral pool lined with cabanas under redwood trees at Fairmont Sonoma Mission Inn & Spa, Sonoma, California
Resort & lodging

Fairmont Sonoma Mission Inn & Spa

Sonoma, CA

A large resort at Boyes Hot Springs, just north of Sonoma, built over thermal mineral springs. The adults-only Fairmont Spa has five geothermal mineral pools and a Roman-style bathhouse, while the family Main Resort Pool is also filled with naturally heated geothermal water and open year-round. Day visitors can book treatments or a spa pass through ResortPass.

Minerals1,220 mg/LSodium–chloride · lithium · high silica
Call for pricesView
Concrete soaking tubs beside a snowy river at sunset at Feather River Hot Springs, Twain, California
Resort & lodgingTemporarily closed

Feather River Hot Springs

Twain, CA

A small, rustic private campground and cabin site on the Feather River off Highway 70 near Twain, with two riverside tubs at 99 to 104F. Soaks are booked by text in two-hour slots, swimsuits are required, and children are not allowed at the springs. The operator has posted that the springs and all lodging are temporarily closed for medical reasons.

From $20View
Long mineral pool and palms at dusk at Fountain of Youth Spa & RV Resort, Niland, California
Resort & lodging

Fountain of Youth Spa & RV Resort

Niland, CA

An RV resort and villa park near the Salton Sea whose signature Lobster Pot raw mineral spa runs at about 100-104F. There are also three private soaking tubs with adjustable temperatures and separate mineral steam rooms. The pools are included for registered guests.

Minerals4,650 mg/LSodium–chloride · high silica
Overnight guestsView
Aerial view of the spring-fed pool among farm fields at Franklin Hot Springs, Paso Robles, California
Day pools

Franklin Hot Springs

Paso Robles, CA

A family-run hot springs on farmland east of Paso Robles, where a 1952 oil survey struck mineral water instead. It has a large spring-fed pool of about 97F, a hot tub of about 100F and a lake for fishing and boating, all on one $10 day pass. The owners say no chemicals are added to the springs, and tent and RV camping is available.

From $10View
Aerial view of floaters in a clover-shaped mineral pool at Glen Ivy Hot Springs, Temescal Valley (Corona), California
Day pools

Glen Ivy Hot Springs

Temescal Valley (Corona), CA

A long-running adults-only day spa in Temescal Valley with 19 pools and water features, led by 104°F Mineral Baths fed by a geothermal source. Admission covers Club Mud, saunas, steam rooms, a hot and cold plunge circuit and daily classes. Reservations are required and there is no re-entry.

From $65View
Guests relaxing in volcanic ash mud baths at Golden Haven Hot Springs Spa and Resort, Calistoga, California
Resort & lodging

Golden Haven Hot Springs Spa and Resort

Calistoga, CA

A family-owned spa and lodge on a residential street near downtown Calistoga, using mineral water from a geothermal aquifer beneath the property. Its gated, partly covered pool runs about 85-88°F, with two adjoining hot spas at 98-100°F and 102-104°F. There is no day use; the pool comes with a stay or any spa treatment, including shared couples mud baths.

Minerals668 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Wooden boardwalk winding across a green meadow toward the pines at Grover Hot Springs State Park, Markleeville, California
Day pools

Grover Hot Springs State Park

Markleeville, CA

A California state park 4 miles west of Markleeville with a concrete hot mineral pool fed by six springs and a separate cooler swimming pool, run with a lifeguard on duty. The hot pool is kept at 102-104°F, and pool entry is sold separately from the $8 vehicle day-use fee. The park also has a forested campground, picnic area and trails to a waterfall and Burnside Lake.

From $10View
Pool beside a blue building with stained-glass windows in the hills at Harbin Hot Springs, Middletown, California
Resort & lodgingClothing opt.

Harbin Hot Springs

Middletown, CA

A rustic, clothing-optional retreat center north of Middletown run by the non-profit Heart Consciousness Church, with eight Mainside pools ranging from a very hot enclosed pool to cold plunges, plus a sauna and steam room. Visitors buy a membership and a 3-, 6- or 24-hour pass, and the property bans alcohol, drugs, phones and cameras. Rebuilding after the 2015 Valley Fire continues, with two new Mainside hotels under construction.

From $25View
Mid-century lounge with a sunken fire pit and glass walls at Hope Springs Resort, Desert Hot Springs, California
Resort & lodging

Hope Springs Resort

Desert Hot Springs, CA

A small adults-only (21+) motel-style retreat with three pools fed by an on-site hot mineral well: an ambient swimming pool, a 92°F pool and an enclosed 104°F pool. The pools are for overnight guests only. Rooms have no TVs, and the resort asks for quiet voices and no phone calls around the pools.

Minerals1,250 mg/LSodium–sulfate
Overnight guestsView
Palm-lined entrance drive with flags at Indian Springs Calistoga, Calistoga, California
Resort & lodging

Indian Springs Calistoga

Calistoga, CA

A historic Calistoga resort whose Olympic-size Main Pool, built in 1913, is fed by mineral water from on-site geysers that surfaces around 230°F and is cooled in reservoirs. A smaller Adult Pool sits next door and runs about ten degrees cooler than the Main Pool. Hotel guests use the pools; day visitors need a spa booking plus a pool pass.

Minerals646 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Mineral pool and lounge chairs under thatched umbrellas at Jacumba Hot Springs, Jacumba Hot Springs, California
Resort & lodging

Jacumba Hot Springs

Jacumba Hot Springs, CA

A hotel in the high desert town of Jacumba Hot Springs, about an hour east of San Diego, whose mineral spring water flows into its pools with no chemical treatment. Day passes cover the large outdoor Ritual Pool (96-101°F), with a limited-pass Solstice Pool and an indoor Echo Room (99-103°F) for hotel guests. Pool access is for ages 21 and over.

From $25View
Resort & lodging

Keough's Hot Springs

Bishop, CA

A pool resort south of Bishop, open since 1919, where spring water is cooled by a waterfall into a large swimming pool alongside a smaller hot soaking pool. Day entry is $14 for adults. The property also has RV and tent sites and furnished canvas tent cabins, and Inyo County's visitor site notes that swimsuits are required.

From $14View
Rock-rimmed hot pool beside a rushing forest creek at Kosk Creek Hot Springs (Hunt and Kosk), Big Bend, California
Day pools

Kosk Creek Hot Springs (Hunt and Kosk)

Big Bend, CA

Rustic hot spring pools of varying temperatures on a private ranch along Kosk Creek near Big Bend in eastern Shasta County. The landowner now sells day passes and campsites through Hipcamp; earlier free access has ended. There is no potable water or trash service, so visitors pack out everything.

From $15View
Bright blue pool lined with tall palm trees at Lido Palms Resort and Spa, Desert Hot Springs, California
Resort & lodging

Lido Palms Resort and Spa

Desert Hot Springs, CA

A small inn on Tamar Drive with a 103°F outdoor hot tub, a 99°F indoor hot tub and a warm outdoor pool, all filled with mineral water pumped from the ground. Day passes cost $55 for visitors 18 and over and include the sauna, towels and robes. Swimwear is required, and rooms have full kitchens.

Minerals710 mg/LSodium–sulfate
From $55View
Pool lined with red lounge chairs in front of the country house at Meadowlark Country House and Resort, Calistoga, California
Resort & lodgingClothing opt.

Meadowlark Country House and Resort

Calistoga, CA

An adults-only country inn on Petrified Forest Road outside Calistoga with a mineral-water lap pool, mineral hot tub and Finnish sauna. The inn says its well water is warmed by volcanic activity; the pool is seasonally heated and not heated in winter. The pool area is clothing-optional, and day visitors can call ahead for a day or evening pass.

From $50View
Cabins and palms in a dry golden valley at Mercey Hot Springs, Firebaugh, California
Resort & lodgingClothing opt.

Mercey Hot Springs

Firebaugh, CA

An off-grid resort in the Little Panoche Valley, 13 miles west of I-5, where salty mineral water emerges at about 112F. Outdoor tubs run 102-106F and are clothing-optional and adults-only, while the heated swimming pool is 85-90F and needs swimsuits. Day use is by reservation from noon to 5pm, and stays range from cabins and Airstreams to RV and tent sites.

Minerals2,275 mg/LSodium–chloride · high silica
From $50View
Pool deck with lounge chairs and green umbrellas at Mi Kasa Hot Springs, Desert Hot Springs, California
Resort & lodgingClothing opt.

Mi Kasa Hot Springs

Desert Hot Springs, CA

A small adults-only (21+), clothing-optional hotel with a natural hot springs pool, an indoor jacuzzi at about 103F and an outdoor jacuzzi at about 100F. Day passes and private tub rentals run 9am to 10pm with single entry. Leashed pets are welcome but may not enter the water.

Minerals985 mg/LSodium–sulfate
Call for pricesView
Mineral pool with a shade structure and desert mountain view at Miracle Manor Boutique Hotel & Spa, Desert Hot Springs, California
Resort & lodging

Miracle Manor Boutique Hotel & Spa

Desert Hot Springs, CA

A nine-room 1950s motel on Miracle Hill with a mineral water pool, a jacuzzi and private hot and cold mineral tubs. Day passes include pool access from 9am to 5pm, a yoga session and a locker, and reservations are required. The property is adults-only (21+) and pet-free.

Minerals1,090 mg/LSodium–sulfate
From $74View
Hot pool among palm trees and lawn at Miracle Springs Resort & Spa, Desert Hot Springs, California
Resort & lodging

Miracle Springs Resort & Spa

Desert Hot Springs, CA

A hotel and spa on Palm Drive with a courtyard of eight natural hot mineral pools, which Greater Palm Springs tourism describes as 140°F water cooled to 90-104°F. Day passes ($20, 21+) are walk-in only, and visitors should bring their own towel and a lock. The Capri Italian Restaurant serves poolside.

Minerals985 mg/LSodium–sulfate
From $20View
Soaker in a rock pool beside a mountain river at Mono Hot Springs Resort, Mono Hot Springs, California
Resort & lodgingSeasonal

Mono Hot Springs Resort

Mono Hot Springs, CA

A seasonal High Sierra resort on the South Fork San Joaquin River, reached over the narrow Kaiser Pass Road, with soaks in private bathhouse rooms and an outdoor mineral spa at about 100-104°F. Day bathhouse passes are $25 for adults, and stays in the stone, rustic and tent cabins include bathhouse use. The 2026 season ran May 22 to October 26.

From $25View
Day poolsSeasonal

Morton's Warm Springs

Glen Ellen, CA

A family-oriented summer swimming resort in the Valley of the Moon with two geothermal mineral pools and a toddler wading pool, all around 90-94°F. The grounds along Sonoma Creek have picnic lawns and BBQs, and the deep pool is reserved for adult swim each morning. It is closed for the off-season and reopens May 1, 2027.

Minerals641 mg/L
From $23View
Historic two-story hotel facade on the main street at Mount View Hotel & Spa, Calistoga, California
Resort & lodging

Mount View Hotel & Spa

Calistoga, CA

A 1917 art deco hotel on Lincoln Avenue in downtown Calistoga with a day spa. Its mineral whirlpool and hydrotherapy tubs use water from the spa's own geothermal well, which surfaces at about 120°F, alongside a heated pool. Details could not be confirmed on the hotel's own site.

Minerals676 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Rustic wooden bathhouse with a stone-edged soaking pool at Muir Trail Ranch, Florence Lake, California
Resort & lodgingSeasonal

Muir Trail Ranch

Florence Lake, CA · 5 mi hike

A remote guest ranch in the John Muir Wilderness, reached by ferry across Florence Lake and a hike of about 5 miles, whose stays include use of its hot springs baths. Short stays include meals and run about $250-$285 per person per night. Accommodations closed for the season after September 7, 2026, and bookings are closed until 2027.

Overnight guestsView
Steaming hot pools and palms in front of white mission-style buildings at Murrieta Hot Springs Resort, Murrieta, California
Resort & lodging

Murrieta Hot Springs Resort

Murrieta, CA

A historic hot springs resort in Murrieta with lodging and more than 20 pools fed by geothermal spring water found on the property, posted at roughly 50°F to 104°F. Most pools use untreated mineral water, while the Blue Lagoon, Oasis, Roman Spa, Vitality Plunge and indoor bathhall are treated. Day passes are sold to families, with separate adults-only areas including a terrace with a panoramic sauna.

Minerals710 mg/LSodium–chloride · high silica
From $109View
Wooded creek gully in the forest at Orr Hot Springs, Ukiah, California
Resort & lodgingClothing opt.

Orr Hot Springs

Ukiah, CA

A small clothing-optional resort on 27 acres at the headwaters of Big River, about 12 miles west of Ukiah on Orr Springs Road. The bathhouse has private and communal tubs, a swimming pool, sauna, steam room and cold plunge, and guests cook their own meals in a shared kitchen because no food is sold. Day use runs noon to 9pm by reservation, and there is no cell service or WiFi.

From $50View
Private hot tub on a deck overlooking vineyards at dusk at River Oaks Hot Springs Spa, Paso Robles, California
BathhouseClothing opt.

River Oaks Hot Springs Spa

Paso Robles, CA

A day spa in Paso Robles that rents geothermal artesian mineral tubs by the hour, either private covered rooms indoors or semi-private open-air tubs outdoors. Soaks cost $30 per person per hour, and the Sip & Soak package adds a wine-tasting flight in an outdoor tub. Massages and facials include a 30-minute indoor soak.

From $30View
Stucco spa building with palms and a vintage car at dusk at Roman Spa Hot Springs Resort, Calistoga, California
Resort & lodging

Roman Spa Hot Springs Resort

Calistoga, CA

A downtown Calistoga hotel with three soaking pools filled with geothermal water from the resort's own wells: a large outdoor pool at about 92-96°F, an outdoor jetted hot tub at 103°F and an indoor jetted pool at 100°F. The Baths at Roman Spa offers mud baths made with geothermal water, volcanic ash and peat. Pools are soaking-only, with no diving or splash games.

Minerals676 mg/LSodium–chloride · lithium · high silica
Overnight guestsView
Aerial view of a palm-ringed pool at dusk at Sam's Family Spa Hot Water Resort, Desert Hot Springs, California
Resort & lodging

Sam's Family Spa Hot Water Resort

Desert Hot Springs, CA

A family-run hot-water resort and RV park on Dillon Road east of Desert Hot Springs, with four chlorine-free mineral spas, swimming and wading pools, a dry sauna and two steam rooms. The spas are drained, cleaned and refilled every morning. Day passes cost $25 on weekdays and $30 on weekends, are sold first come, first served, and kids of all ages are welcome.

Minerals873 mg/LSodium–sulfate
From $25View
Resort & lodgingClothing opt.

Sea Mountain Nude Resort & Spa

Desert Hot Springs, CA

A clothing-optional, adults-only resort for couples and women, with a heated mineral water pool, a whirlpool and a cedar sauna. Day visits run 10:30am to 5pm year-round, and couples passes start at $99. No one under 21 is allowed on the grounds.

Minerals985 mg/LSodium–sulfate
From $79View
Long spring-fed swimming pool lined with palm trees at Shoshone Village (Shoshone Inn & RV Park), Shoshone, California
Resort & lodging

Shoshone Village (Shoshone Inn & RV Park)

Shoshone, CA

A small desert village with an inn, RV park and campground around a naturally warm mineral spring swimming pool. Inn guests use the pool free, and it sits beside the RV park and a short wetland trail through endangered pupfish and vole habitat. Shoshone is about a mile from the southeast entrance to Death Valley National Park.

Minerals1,027 mg/L
Call for pricesView
Boulder-edged pool among tall pines at Sierra Hot Springs, Sierraville, California
Resort & lodgingClothing opt.

Sierra Hot Springs

Sierraville, CA

A nonprofit hot springs retreat on more than 600 acres outside Sierraville, about 30 minutes north of Truckee. Its four soaking areas run from the 95-96F Phoenix Baths to the 110-112F Temple Dome Hot Pool, which sits under a geodesic dome with two cold plunges, and all soaking areas are clothing optional. Every visit needs an advance reservation and at least one member in the party, and stays are in the Main Lodge, the Globe Hotel or the campground.

From $35View
Round pool and lounge chairs at dusk at Sky Valley Resort, Desert Hot Springs, California
Resort & lodging

Sky Valley Resort

Desert Hot Springs, CA

An RV resort east of Desert Hot Springs whose sulfur-free hot water supplies 12 pools and spas, including a tub at about 104F. The pools are for resort guests, and no day pass is published. Its sister property, Caliente Springs, is a 55+ resort.

Minerals1,045 mg/LSodium–sulfate
Overnight guestsView
Long pool with umbrellas and palm trees at sunset at Solage, Auberge Resorts Collection, Calistoga, California
Resort & lodging

Solage, Auberge Resorts Collection

Calistoga, CA

A resort on the Silverado Trail whose Spa Solage Bathhouse has five geothermal pools, from a 50-55°F cold plunge and an ambient magnesium pool to a 98°F relaxation pool and two jetted pools at 102-104°F. The signature Mudslide pairs a mud treatment with a private geothermal soak. The spa is 18+; non-guests can buy a Bathhouse Access Pass.

Minerals646 mg/LSodium–chloride · lithium · high silica
From $225View
Steam rising from geothermal vents over a marshy valley at Surprise Valley Hot Springs, Cedarville, California
Resort & lodging

Surprise Valley Hot Springs

Cedarville, CA

A small adults-only lodging on Highway 299 five miles east of Cedarville in remote Modoc County, where each of its 19 rooms has its own private mineral-water tub. Fifteen tubs sit on fenced outdoor patios and four are inside suites, and guests can adjust the temperature. There is no day use, no public pool and no food service on site, and all stays need a reservation with a two-night minimum.

Overnight guestsView
Two guests on the edge of the pool below a glass-roofed pavilion at Sycamore Mineral Springs Resort & Spa, Avila Beach, California
Resort & lodging

Sycamore Mineral Springs Resort & Spa

Avila Beach, CA

A resort near Avila Beach built on sulfur mineral wells struck by oil prospectors in 1886. Its 24 private hillside hot tubs sit on wooden decks under sycamore and oak trees and are rented by the hour, from $25 per person on weekdays. A group lagoon with waterfalls and a mineral swimming pool are also bookable, and every guest room has its own mineral tub.

From $25View
Shaded creek in a wooded canyon at Tassajara Zen Mountain Center, Carmel Valley, California
Resort & lodgingSeasonalClothing opt.

Tassajara Zen Mountain Center

Carmel Valley, CA

A San Francisco Zen Center monastery at the end of a 14-mile dirt road in the Ventana Wilderness, with a historic stone bathhouse on the hot springs. The baths have indoor and outdoor plunges, steam rooms and a sauna; they are clothing-optional and separated by gender. Guests visit only in the summer season, from late April to early September, by reservation.

Overnight guestsView
Marshy desert pond below dry hills at Tecopa Hot Springs & Campground, Tecopa, California
Day pools

Tecopa Hot Springs & Campground

Tecopa, CA

An Inyo County park in the Tecopa Valley with two bathhouses, each with separate enclosed pools for men and women, fed by artesian water of about 102F. Bathing is in the nude only, under a county code. A concessionaire took over under a 10-year agreement and sells $15 day soaking passes, plus more than 200 RV and tent sites.

Minerals2,020 mg/LSodium–bicarbonate · high silica
From $15View
Palm-lined pool in front of the stone inn at twilight at The Oasis at Death Valley, Furnace Creek, California
Resort & lodging

The Oasis at Death Valley

Furnace Creek, CA

A pair of hotels at Furnace Creek in Death Valley National Park, the Inn and the Ranch, each with a spring-fed swimming pool held at about 87F. The Ranch pool is open 8am-11pm to guests of both hotels, and the public can buy pool passes at the Ranch desk. The Inn's historic tiled pool is for Inn guests and sits beside a spa and poolside cafe.

Minerals602 mg/LSodium–bicarbonate
Call for pricesView
Private sunken soaking tub in a stone-tiled room at The Spa at Séc-he (Agua Caliente Cultural Plaza), Palm Springs, California
Bathhouse

The Spa at Séc-he (Agua Caliente Cultural Plaza)

Palm Springs, CA

A 73,000 sq ft spa in downtown Palm Springs on Séc-he, the Agua Caliente Hot Mineral Spring that the Agua Caliente Band of Cahuilla Indians has cared for over generations and still treats as one of its most important cultural resources. The day pass includes a 15-minute private mineral bath in roughly 105°F spring water, plus steam, sauna and a pool deck. It is part of the tribe's Cultural Plaza alongside the Agua Caliente Cultural Museum; guests must be 18 or older.

Minerals234 mg/LSodium–bicarbonate
From $135View
Pool and lounge chairs in front of a low motel building at The Spring Resort & Spa, Desert Hot Springs, California
Resort & lodging

The Spring Resort & Spa

Desert Hot Springs, CA

A small adults-only (18+) inn and day spa on Miracle Hill with three mineral pools: an enclosed soaking pool, a 104°F outdoor pool and a larger swimming pool. Day visitors get two hours in the pools and Finnish sauna with a spa treatment of 50 minutes or more. The resort can reach capacity and turn away day use on weekends and holidays.

Minerals1,090 mg/LSodium–sulfate
Call for pricesView
Pool terrace with striped lounge chairs lit at night at Tuscan Springs Hotel & Spa, Desert Hot Springs, California
Resort & lodging

Tuscan Springs Hotel & Spa

Desert Hot Springs, CA

A 16-room adults-only (21+) boutique hotel with a large hot mineral pool and two mineral jacuzzis fed by a 350 ft well. Day visitors can use the pools and dry sauna for four hours for $50. Pool use is free with any treatment at the on-site La Bella Spa.

Minerals1,250 mg/LSodium–sulfate
From $50View
Palm trees reflected in the still grotto pool at Two Bunch Palms, Desert Hot Springs, California
Resort & lodging

Two Bunch Palms

Desert Hot Springs, CA

An adults-only resort on Two Bunch Palms Trail whose grounds center on a mineral-water grotto fed by a local aquifer that the resort says emerges at over 100°F. Day visitors can buy a Mineral Soak Day ($165, 9am-6pm, lunch included) or an evening soak with dinner. Guests must be 18 or older, and pets are not allowed.

Minerals710 mg/LSodium–sulfate
From $165View
Gabled inn buildings and entrance pergola at UpValley Inn & Hot Springs, Calistoga, California
Resort & lodging

UpValley Inn & Hot Springs

Calistoga, CA

A Lincoln Avenue hotel, formerly a Comfort Inn, whose outdoor swimming pool and whirlpool are filled with mineral water from its own geothermal well. A cedar dry sauna and steam room are included with the pool. Non-guests can buy a day pass through ResortPass.

Minerals668 mg/LSodium–chloride · lithium · high silica
From $62View
Pool beside autumn trees and a fountain lawn at Vichy Springs Resort, Ukiah, California
Resort & lodging

Vichy Springs Resort

Ukiah, CA

A historic resort and country inn in the hills east of Ukiah, operating since 1854 and listed as California Historical Landmark #980. Its signature is 14 tubs of naturally carbonated mineral water at about 90F, alongside a 104F hot pool and a seasonal 25-meter swimming pool. Day visitors pay by 2-hour, 3-hour or all-day blocks and can use trails on the 700-acre reserve; bathing suits are required.

Minerals3,450 mg/LSodium–chloride · lithium · high silica
From $45View
Stone footbridge over a palm-lined pond at Warner Springs Ranch Resort, Warner Springs, California
Resort & lodgingTemporarily closed

Warner Springs Ranch Resort

Warner Springs, CA

A historic ranch resort in the Warner Valley of north San Diego County built around the Warner Hot Springs. The resort's own site lists the hot mineral pools, casitas, spa, dining and golf as closed for remodeling, with only the gas mart open. No reopening date has been published.

Minerals341 mg/LSodium–sulfate · high silica
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Soaker in a wooden flume pool under a covered bathhouse at Wilbur Hot Springs, Williams, California
Resort & lodgingClothing opt.

Wilbur Hot Springs

Williams, CA

An off-grid, solar-powered hot springs hotel on Sulphur Creek in western Colusa County, surrounded by a 1,560-acre nature preserve. Untreated mineral water flows continuously through flumes in a Japanese-style Fluminarium at about 100 to 109F, and the bathing area is clothing optional and device free. Confirmed reservations are required for both day use and overnight stays, and only guests 13 and older are admitted.

Minerals5,564 mg/L
From $69View
Wild springTemporarily closed

Big Caliente Hot Springs

Santa Barbara, CA

A day-use hot spring in the Upper Santa Ynez area of Los Padres National Forest, and the only spring on the forest modified with a small concrete retention structure. It sits beside the Big Caliente Picnic Area at the end of a long dirt-road drive from San Marcos Pass. The picnic area is closed under a storm-damage order through September 15, 2027.

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Wild spring

Buckeye Hot Springs

Bridgeport, CA

Undeveloped pools beside Buckeye Creek in the Humboldt-Toiyabe National Forest, about 10 miles from Bridgeport and just east of Buckeye Campground. The Forest Service says the 140°F spring spills over a rock overhang into a cave-like pool, with a smaller spring upstream. A 2022 project added a vault toilet, a formal parking area, a single trail to the pools and interpretive signs.

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Clear rock pools along a creek in a desert canyon at Deep Creek Hot Springs, Apple Valley, California
Wild spring

Deep Creek Hot Springs

Apple Valley, CA · 2.5 mi hike

Natural hot pools along Deep Creek in the San Bernardino National Forest, reached by a 2.5-mile, roughly 950-foot descent via the Bowen Ranch route or a 6-mile hike on the Pacific Crest Trail. Overnight camping and campfires are banned, and visitors must pack out all trash. The Forest Service warns the pools can carry a rare, sometimes fatal amoeba, so do not drink the water or put your head under.

Minerals352 mg/LSodium–sulfate
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Wild spring

Gaviota Hot Springs

Goleta, CA · 0.7 mi hike

Two small warm sulfur springs in the uplands of Gaviota State Park, reached by a somewhat steep climb on the Gaviota Peak Fire Road. The trail starts from a parking lot about 2.5 miles north of the main park entrance, where Highway 1 splits from U.S. 101. The park map puts the springs 0.7 mile from the lot, and the fire road continues on to Gaviota Peak.

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Palm-fringed desert pond at Hot Springs Long Term Visitor Area (Holtville), Holtville, California
Wild spring

Hot Springs Long Term Visitor Area (Holtville)

Holtville, CA

A BLM long-term visitor area east of Holtville in the Imperial Valley, known for a historic hot spring that BLM describes as still active and popular with locals and winter visitors. Camping here needs an LTVA permit from mid-September to mid-April. BLM lists swimming among its activities but publishes no pool details.

Minerals2,337 mg/LSodium–chloride
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Wild springSeasonal

Jordan Hot Springs

Kernville, CA

Backcountry hot springs in the Golden Trout Wilderness, reached on the Forest Service's Jordan Hot Springs Trail from the Blackrock Trailhead. The trail is used from May to November and is open to hikers and horse riders. Overnight visitors need a Golden Trout Wilderness permit.

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Wild springSeasonal

Kern Hot Spring

Three Rivers, CA · 36.8 mi hike

A cement soaking tub a few feet from the Kern River, 36.8 miles from Crescent Meadow on the High Sierra Trail in Sequoia National Park. The spring water is 115F, and the tub's runoff mixes with river water to form a cooler pool. Campers must use the designated sites here, and the park asks for no soap in the tub or river.

Minerals1,060 mg/L
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Wild springTemporarily closed

Little Caliente Hot Springs

Santa Barbara, CA

A primitive, undeveloped hot spring on the Santa Barbara Ranger District, a short walk from Mono Campground beyond Pendola Station. The Forest Service treats it as day-use only, with no camping at the springs. The Little Caliente Picnic Area and Mono Campground are closed under a storm-damage order through September 15, 2027.

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Wild springClothing opt.

Saline Valley Warm Springs

Big Pine, CA

A clothing-optional warm springs area with a primitive campground in a remote valley of Death Valley National Park, about 35 miles from the nearest paved road. Reaching it takes a high-clearance vehicle with all-terrain tires over North Pass (7,300 ft) or South Pass (5,997 ft). The Lower Springs have been closed since a September 2026 wildfire, while camping between Lower and Palm Springs stays open.

Minerals1,170 mg/LSodium–chloride
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Wild spring

Sespe Hot Springs

Ojai, CA · 9.5 mi hike

Remote hot springs and a hot creek at about 2,600 feet in the Sespe Wilderness, reachable only on foot or horseback. The Forest Service describes three routes: the Sespe River Trail from Piedra Blanca, the Alder Creek Trail from Dough Flat near Fillmore, and the Johnston Ridge Trail from Mutau Flat. It recommends spring visits, since summer temperatures can top 100F.

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Boulder-filled creek in a forested canyon at Sykes Hot Springs, Big Sur, California
Wild springTemporarily closed

Sykes Hot Springs

Big Sur, CA

Backcountry hot springs beside the Big Sur River in the Ventana Wilderness, reached on the Pine Ridge Trail from Big Sur Station. The Forest Service notes that several river crossings are required and can be impassable in winter high water. The trail and trailhead have been closed since August 2026 because of the Timber and Plaskett Fires.

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Small hot pools on a cracked travertine ridge at Travertine Hot Springs, Bridgeport, California
Wild spring

Travertine Hot Springs

Bridgeport, CA

Hot springs and soaking tubs on BLM land off Jack Sawyer Road just southeast of Bridgeport, managed by the Bishop Field Office. The site has a long history with the region's Native people, and BLM has closed it to all public access for Tribal ceremonial use (Oct 30-Nov 6, 2024). BLM's closure map shows a gated access road, a parking lot and a trail to the tubs.

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Wild spring

Wild Willy's Hot Springs (Crowley Hot Spring)

Mammoth Lakes, CA · 0.2 mi hike

Undeveloped hot pools on BLM land in Long Valley, reached by a dirt road off Benton Crossing Road and a short boardwalk walk from the parking area. The BLM and Mono County maintain and rerouted the access road, which the BLM says carries more than 500 vehicles on busy days. Mono County notes that natural pools like this are not maintained and asks visitors to pack out what they bring.

Minerals1,240 mg/LSodium–chloride · high silica
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Metal stock-tank tub filled by a pipe on a brushy hillside at Willett Hot Springs, Ojai, California
Wild spring

Willett Hot Springs

Ojai, CA · 9.6 mi hike

Primitive hot springs in the Sespe Wilderness, about 9 miles east of Piedra Blanca Trailhead on the Sespe River Trail and then 0.6 mile past Willett Camp. The area is open only to foot and horse travel, and parking at the trailhead requires a recreation pass. The Forest Service lists it among the four hot springs on Los Padres open to visitors.

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