Gilman Hot Springs
Gilman Hot Springs discharges at 117 degrees Fahrenheit, flowing nearly 52 degrees warmer than ambient in a modest but reliable system near San Jacinto.
The spring emerges from granitic alluvium terrain at 1,508 feet elevation, roughly 90 feet from Gilman Springs Road in landscape shaped by the San Jacinto River and Potrero Creek. The Inland Empire setting presents chaparral-covered hills and coastal sage scrub, creating a warm, dry environment well-suited to thermal features.
Historically known as San Jacinto Hot Springs or the Relief Springs, this system took its modern name from the Mexican land grant Rancho San Jacinto Viejo that once covered this region. The springs form from groundwater heated by deep geothermal gradient and filtered through granitic rock before emerging at the surface.
Roadside access from Gilman Springs Road. The semi-arid climate makes visits comfortable year-round, though late spring through early fall offers the best conditions. Limited parking and minimal facilities on-site; plan to visit as a short stop rather than extended stay.
Is Gilman Hot Springs worth visiting?
Best for
- Hot spring soaking
- Easy day trips
- Overnight camping trips
Overview Black Mountain Road is is poor condition at this time. A four-wheel drive (4WD) vehicle is recommended with a minimum ground clearance of 6 inches. Drive at your own risk. The San Bernardino National Forest is submitting a proposal to increase fees at various sites across the Forest and is seeking public input. Please visit the https://www.fs.usda.gov/sbnf for more information and to submit comments regarding this proposal.Boulder Basin Campground offers solitude and primitive camp...