Morton's Warm Springs
- From $23
- 90–94°F
- 1 hr 27 min from San Francisco
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.
Closed for the off-season; reopens May 1, 2027.
- Price
- From $23
- Water
- 90–94°F
- Nearest town
- Glen Ellen
- From San Francisco
- 1 hr 27 min
- Reservations
- Walk-in OK
Plan your visit
Hours & season
| Hours |
|
|---|---|
| Season |
|
Tickets & booking
| Price |
|
|---|---|
| Access | Day pass, walk-ins welcome |
| Booking |
|
Rules
| Swimwear |
|
|---|---|
| Ages |
|
| Dogs | Yes |
On site
| Pools | 3 |
|---|---|
| Lodging | No |
Not stated by the venue: camping nearby.
Water temperature
Soaking-pool temperatures as published by the venue or land agency; they vary with season and flow.
Mineral profile
Total dissolved minerals
641 mg/L
Moderately mineralized
- Temp at source
- 90°F
Lab analysis of the source water at a USGS sampling site, sampled 2003 by the USGS and partners (data). Pool water may be cooled, mixed or treated, and spring chemistry is generally stable over decades. We report measurements only; we don't make health claims.
The pools
| Pool | Temp | Depth |
|---|---|---|
| Diving Pool (Deep Pool)4.5-9 ft deep; adult swim 10am-noon. | 90–94°F | 9 ft |
| Family Pool2.5-5 ft deep. | 90–94°F | 5 ft |
| Wading poolkidsGeothermal wading pool for infants and toddlers. | — | — |
As published by the venue. Temperatures shift with the seasons and the weather.
Facilities
- Changing rooms: yes
- Showers: yes
- Towels included: no
- Food on site: yes
- Restrooms: yes
| Bring your own alcohol | Allowed |
|---|---|
| Glass containers | Not allowed |
| Smoking | Not allowed |
| Good to know |
|
What's here
- two geothermal mineral swimming pools
- geothermal toddler wading pool
- lifeguards
- picnic and BBQ sites
- Cafe 108
- Sonoma Creek frontage
- group sites for 20-400
Getting there
- From San Francisco1 hr 27 min56 mi
- From Santa Rosa22 min13 mi
- From Santa Rosa (STS)33 min20 mi
Typical driving time without traffic or snow.
| Elevation | 361 ft |
|---|---|
| Road |
|
Things to do near Glen Ellen
Jack London State Historic Park
Jack London's ranch, ruins of Wolf House and hiking trails above Glen Ellen.
Sonoma State Historic Park
Mission San Francisco Solano and other historic sites around Sonoma Plaza.
Sugarloaf Ridge State Park
Trails, camping and an observatory in the Mayacamas Mountains near Kenwood.
Campgrounds
Straight-line distances. Campground and trailhead data © OpenStreetMap contributors.
Nearby springs
Fairmont Sonoma Mission Inn & Spa
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.
Calistoga Motor Lodge and Spa
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.
Calistoga Spa Hot Springs
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.
Fairmont Sonoma Mission Inn & Spa: 7 mi · Calistoga Motor Lodge and Spa: 13 mi · Calistoga Spa Hot Springs: 13 mi
Sources (3)
· checked November 2026
Prices, hours and rules are checked against the official site and land-agency pages. Spot something out of date? Let us know.