Natural hot spring · California
San Juan Hot Springs
Orange County, California · 4.5 miles east of Coto De Caza, CA
Last updated
- Type
- Natural Natural hot spring
- Water temperature
- 120°F (49°C) at the source
- Cost
- Not recorded
- Hours or season
- Not recorded
- Clothing
- Not recorded
- Nearest town
- Coto De Caza, CA (5 mi / 7 km)
- Coordinates
- Pools or sources
- 1
- Very hot: above comfortable soaking temperature for most people. Enter slowly.
- Historical record only: this spring has not been confirmed on the ground since 1981 and may be on private land.
About San Juan Hot Springs
San Juan Hot Springs is a natural hot spring in Orange County, California, about 4.5 miles east of Coto De Caza, CA. The nearest large city is Rancho Santa Margarita, CA, roughly 6 miles away as the crow flies.
The temperature at the source has been recorded at 120°F (49°C). That puts it in the "too hot to enter at the source" range. Water this hot can burn skin quickly. Soaking pools are usually cooled by mixing with creek or tap water. Never enter the source itself.
It is a natural spring with little or no development. Some natural springs have rock pools you can sit in, while others are too hot, too shallow or on land where soaking is not allowed.
This spring comes from the US federal Thermal Springs List compiled in 1981. Nobody has confirmed it on the ground for this directory since, so treat the details as historical. Many springs on that list sit on private ranch land, so never visit without permission.
Water temperature
Too hot to enter at the source. Water this hot can burn skin quickly. Soaking pools are usually cooled by mixing with creek or tap water. Never enter the source itself.
Readings come from the NOAA thermal springs list, and other public sources. Temperatures change with season, flow and pool design. See our soak temperature guide for safe soaking times.
Map and directions
Red marks San Juan Hot Springs. Other colored dots are nearby springs in this directory. Coordinates: 33.58900, -117.51100.
Getting there
- Nearest town: Coto De Caza, CA. The spring is about 4.5 miles (7 km) east of town in a straight line.
- Nearest large city: Rancho Santa Margarita, CA, about 6 miles (10 km) in a straight line.
- Planning from a city? See hot springs near Santa Ana, CA.
- Use the directions buttons above for a driving route. Final roads to many springs are unpaved, seasonal or closed in winter, so check road conditions before you go.
Weather forecast
Live forecast for this exact spot from the US National Weather Service.
Hot springs near San Juan Hot Springs
- Glen Ivy Hot Springs 131°F
- Temecula Hot Springs 117°F
- Murrietta Hot Springs 133°F
- Fairview Hot Spring 97°F
- Lakeview Hot Springs 100°F
- Eden Hot Springs 109°F
Before you go
- Check the operator, land manager or park website for current hours, fees and closures. Details in any directory can go out of date.
- Pack out everything you bring, including food scraps. Do not use soap in natural pools.
- Keep your head above water. Warm fresh water can carry Naegleria fowleri, a rare but deadly amoeba that enters through the nose.
- Drink water, limit soaks to 10 to 20 minutes at a time in very hot water, and skip alcohol.
- Read our hot spring etiquette guide and safety guide.
Frequently asked questions
How hot is San Juan Hot Springs?
The temperature at the source has been recorded at 120°F (49°C), which is too hot to enter at the source. Water this hot can burn skin quickly. Soaking pools are usually cooled by mixing with creek or tap water. Never enter the source itself.
Where is San Juan Hot Springs?
San Juan Hot Springs is in Orange County, California, about 4.5 miles east of Coto De Caza, CA. The GPS coordinates are 33.5890, -117.5110.
Can you soak at San Juan Hot Springs?
The source is too hot to enter safely. Natural springs vary. Some have pools built by visitors, others are too hot or shallow, and some are on private land or in areas where bathing is banned. Check local rules and test the water before you get in.
What hot springs are near San Juan Hot Springs?
The closest listed spring is Glen Ivy Hot Springs, about 11 miles north. Temecula Hot Springs is about 20 miles away.
What should I bring to a hot spring?
Water to drink, a towel, sandals with grip, a bag to pack out trash, and warm layers for after your soak. At primitive springs bring a headlamp and tell someone where you are going.
Sources and corrections
This listing combines the NOAA NCEI Thermal Springs List. Data last refreshed August 2026. Source 1
Visited recently? Send a correction, such as a temperature reading, fee, closure or photo. If you look after this spring and want it removed, see removal requests.