At 153°F, the source water at Wilbur Springs is hot enough to cause burns. Some hot springs this hot have cooler side pools or downstream areas suitable for soaking — always test the water temperature before entering.
Image via Wikidata
Wilbur Springs flows at 153 degrees Fahrenheit in Lake County's rugged terrain at 1,721 feet elevation, just 2.7 meters from the nearest road. Formerly known as Simmons Hot Springs, this historically developed spa continues operation and flows 90.2 degrees above ambient temperatures in coastal mountain climate that averages 62.8 degrees Fahrenheit annually.
The spring emerges in chaparral-covered hills northwest of Clearlake in the interior Coast Ranges. Dense scrub vegetation and rocky outcroppings characterize the landscape immediately surrounding the thermal feature. The nearby road provides direct access, yet the landscape retains a somewhat wild character with limited development visible from the spring itself.
History of Wilbur Springs
Wilbur Hot Springs was developed as a spa facility in the 19th century, operating under the earlier name Simmons Hot Springs before adopting its current identity. In 1970s, therapist Richard Louis Miller acquired the property and established it as a spa resort and personal retreat. The elevated temperature and proximity to population centers made it valuable for historical resort development and continues to attract visitors seeking thermal experiences.
Access is roadside and straightforward, requiring no hiking or technical travel. The water temperature reaches extremely hot levels (153°F), dangerous for immediate immersion and requiring careful cooling or extremely brief contact. Respect private property and operational hours. Best visits align with spring and fall temperatures when air temperatures create more comfortable thermal contrasts.
Is Wilbur Springs worth visiting?
Best for
Observing powerful hot springs
Easy day trips
Overnight camping trips
Not ideal for
Casual soaking
Wilbur Springs is well suited for observing powerful hot springs and easy day trips.
Monthly Climate
48°Jan
50°Feb
52°Mar
59°Apr
66°May
76°Jun
81°Jul
80°Aug
75°Sep
65°Oct
54°Nov
47°Dec
Annual Precip: 21.1 inAnnual Snow: 3.7 in
Best Time to Visit
DecemberAir 47°F · Water 153°F · +106° contrast
JanuaryAir 48°F · Water 153°F · +105° contrast
FebruaryAir 50°F · Water 153°F · +103° contrast
December offers 34°F more contrast than July
USGS Field Measurements
Recent Temperature
80.6°F
(27.0°C)Measured Nov 16, 2015
Water ChemistrySampled 2015-11-16
The water at Wilbur Springs is slightly acidic (pH 6.7).
Overview
This location is available on a first-come, first-served basis only. Visitors are required to physically arrive at the campground to purchase and claim a site.Once on-site, you are able to pay for your campsite(s) by scanning a QR code using the Recreation.gov mobile app, and the Scan and Pay feature.In order to utilize Scan & Pay on site, you will need to first download the free Recreation.gov mobile app https://www.recreation.gov/mobile-app prior to your arrival as some remote area...
Wilbur Springs has a water temperature of 153°F (67°C). This is considered a hot spring, well above body temperature.
Where is Wilbur Springs located?
Wilbur Springs is located in Lake County, California at 1,721 feet elevation, near Clearlake. Coordinates: 39.0390°N, 122.4210°W.
How do I get to Wilbur Springs?
Wilbur Springs has Roadside road access (9 ft from the road).
Can I camp near Wilbur Springs?
Yes, Little Stony is located nearby (19.0 miles away).
What minerals are in the water at Wilbur Springs?
Water chemistry analysis shows the presence of pH. The pH is 6.7 (slightly acidic).
Is it safe to soak at Wilbur Springs?
The water at Wilbur Springs reaches 153°F, which can cause severe burns. Do not enter the source pool directly — look for cooled side pools or downstream areas where the water has cooled to a safe temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Wilbur Springs crowded?
Wilbur 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 Wilbur Springs?
Essentials for Wilbur Springs: swimsuit, towel, water bottle, camping gear, 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.
