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Every Hot Spring

San Juan Hot Springs

San Juan Hot Springs is a geothermal spring near San Juan Capistrano in Orange County, California. Water at the source is recorded at 120°F (49°C), hot enough to scald.

120°F49°C recorded at the source
Scalding at the source. Do not enter without a cooled, mixed pool.

San Juan Hot Springs, also San Juan Capistrano Hot Springs, is a geothermal area in what is now Ronald W. Caspers Wilderness Park, near Cleveland National Forest, in Orange County, California in the United States.

Facts

Coordinates
33.5890, -117.5110 (Google Maps, OSM)
Source temperature
120°F (49°C)
Access
Unknown
Type
Unknown
Fee
Not recorded
Clothing optional
Not recorded
Nearest town
San Juan Capistrano
Data sources
NOAA NCEI, Wikipedia, Official sources (linked below). See sources

Map

Larger marker is San Juan Hot Springs; smaller markers are other springs within 50 miles.

Quick answers

How hot is San Juan Hot Springs?
The hottest recorded reading at the source is 120°F (49°C). That is the outlet temperature, not a pool temperature; water cools as it flows away from the source. Water this hot can cause serious burns, so test any pool by hand first.
Where is San Juan Hot Springs?
San Juan Hot Springs is near San Juan Capistrano in Orange County, California, at coordinates 33.5890, -117.5110.
What other hot springs are near San Juan Hot Springs?
The closest listed springs, in straight-line distance, are Spring at 33.51, -117.60, 7 mi; Glen Ivy Hot Springs, 11 mi; and Wrenden Hot Sprs, Elsinore Hot Sprs, 12 mi.

Before you go

  • Temperatures are measured at the source and can be far hotter than any soaking pool. Test with a hand before stepping in.
  • Access, fees, and road conditions change. Verify with the land manager or owner; "public" here reflects survey records, not a current right of entry.
  • Water in natural springs is untreated. Keep your head above water and avoid soaking with open wounds. Some springs carry Naegleria fowleri risk.
  • Pack out everything, including soap residue. Many springs have been closed because of trash and overcrowding.

Sources

Dataset last rebuilt October 11, 2026. Not yet checked on site by a person. Access, fee, clothing and closure details appear only when a source below states them. How this data is built.

Checked against

  1. Wikipediaen.wikipedia.org/wiki/San_Juan_Hot_Springs

Merged from

  1. NOAA NCEI Thermal Springs List (archived 2025): survey location and source temperature, public domain
  2. Wikipedia: short description, CC BY-SA 4.0