San Francisco Hot Springs surfaces at 120°F (35°C per USGS) along the San Francisco River in Greenlee County at 4,640 feet. The water is high in chloride (310 mg/L) and sodium (200 mg/L) with a neutral pH of 7.3. Roadside access places the spring just 53 meters from the road, though terrain may require scrambling.
The spring emerges along the steep-walled San Francisco River canyon near the New Mexico–Arizona border. At 4,640 feet, the canyon supports riparian cottonwood and willow along the river, while surrounding hillsides carry Sonoran-to-transition-zone vegetation including juniper and scrub oak. Annual rainfall averages 14 inches with about 11 inches of snow. The river canyon cuts deeply into volcanic and sedimentary rock, and the Gila Wilderness sprawls to the northeast across the state line.
History of San Francisco Hot Springs
San Francisco Hot Springs takes its name from the San Francisco River. The thermal features along this canyon have been used informally by bathers for decades. Flash flooding periodically reshapes the pools and access trails — major floods have repeatedly destroyed and rebuilt the soaking areas. The spring lies in a remote stretch of canyon accessed primarily from the Arizona side via Clifton, despite its New Mexico county designation.
Flash flood risk is serious in this canyon; do not visit during monsoon season (July through September) or when storms are forecast. The 120°F source water is dangerously hot — downstream pools where river water mixes create soakable temperatures. Check locally in Clifton for current trail and road conditions, as access routes change after floods. Carry adequate water and sun protection. No developed campgrounds exist nearby; the closest reservable option is over 35 km away.
Is San Francisco Hot Springs worth visiting?
Best for
- Hot spring soaking
- Easy day trips
San Francisco Hot Springs offers an accessible hot spring experience — great for a day trip.
Annual Precip: 14.0 in
Annual Snow: 10.6 in
January
Air 41°F · Water 120°F · +80° contrast
December
Air 41°F · Water 120°F · +79° contrast
February
Air 46°F · Water 120°F · +74° contrast
January offers 41°F more contrast than June
Recent Temperature
95.0°F
(35.0°C)
Measured Dec 05, 1974
The water at San Francisco Hot Springs is slightly alkaline (pH 7.3). It is notably rich in chloride (natural antiseptic with skin health benefits).
pH influences mineral absorption through skin
Supports circulation and skin hydration
Traditionally used for skin conditions and inflammation
Natural antiseptic with skin health benefits
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Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Trash bag
Pack out what you pack in
Water shoes
Hot ground near source
30 miles from Clifton, NM
USGS Quad: WILSON MOUNTAIN 7.5 · PP 492: 25.0 · Circ 790: 174.0 · NOAA: 8.0 · AMS Map: CLIFTON
What is the water temperature at San Francisco Hot Springs?
San Francisco Hot Springs has a water temperature of 120°F (49°C). This is considered a hot spring, well above body temperature.
Where is San Francisco Hot Springs located?
San Francisco Hot Springs is located in Greenlee County, New Mexico at 4,640 feet elevation, near Clifton. Coordinates: 33.2440°N, 108.8800°W.
How do I get to San Francisco Hot Springs?
San Francisco Hot Springs has Roadside road access (175 ft from the road).
What minerals are in the water at San Francisco Hot Springs?
Water chemistry analysis shows the presence of pH, Sodium, Sulfate, Chloride. The pH is 7.3 (slightly alkaline).
Is it safe to soak at San Francisco Hot Springs?
At 120°F, San Francisco Hot Springs is hot enough to require caution. Enter slowly, limit soaking sessions to 15–20 minutes, and stay hydrated. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is San Francisco Hot Springs crowded?
San Francisco Hot Springs is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to San Francisco Hot Springs?
Essentials for San Francisco Hot Springs: swimsuit, towel, water bottle, a trash bag to pack out what you pack in. The water is over 110°F — test the temperature before entering and watch for scalding near the source.