Agua Caliente Spring

Santa Barbara County, California · Near Toro Canyon
34.5380°N, 119.5600°W · 2,372 ft
133°F 68°F air · Good soaking weather 2,372 ft Open Short Walk US Forest Service Camping nearby (11.1 mi)

Agua Caliente Spring in Los Padres National Forest, Santa Barbara County, runs hot enough to hurt with any real contact, well past bath temperature. Toro Canyon is the nearest town listed, about seven miles. Forest Service land, open access.

Location

Roughly 2,400 feet up in the Los Padres, where rain totals about fifteen inches and snow is a trace. About a thousand feet on foot from a nameless road. National forest, no fee recorded. Upper Oso Campground is about eleven miles away, and the mean temperature for the year is around sixty.

Winter is the listed season. The water is the hazard here: at 133 it will burn, so test before touching and never get in without knowing the water has cooled. Short walk. Camping at Upper Oso, eleven miles. No chemistry on file. A photo exists, and Toro Canyon is the only town recorded nearby.

History of Agua Caliente Spring

Wikipedia files the site as Big Caliente Hot Springs, several thermal mineral springs together in the Los Padres National Forest.

Terrain

Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Agua Caliente Spring.

Aerial view of the ground around Agua Caliente Spring LiDAR bare-earth view of the same ground around Agua Caliente Spring
Aerial LiDAR bare earth

Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.

Setting
Hillside
The spring sits on a steep slope that climbs to the northeast.
Highest ground nearby
232 ft above the spring
Within a quarter mile, to the northeast
Cross-section through the spring

A slice through the ground from northwest to southeast, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
66 milliwatts per square meter of heat flow

That's close to the US average of 65. It's higher than at 2% of the springs on this site.

Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.

Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.

Monthly Climate
50°
Jan
50°
Feb
53°
Mar
58°
Apr
61°
May
69°
Jun
74°
Jul
75°
Aug
71°
Sep
64°
Oct
56°
Nov
50°
Dec
Annual Precip: 14.6 in Annual Snow: 1.4 in
Best Time to Visit
January Air 50°F · Water 133°F · +83° contrast
February Air 50°F · Water 133°F · +83° contrast
December Air 50°F · Water 133°F · +83° contrast
January offers 25°F more contrast than August
Current Conditions
68°F
E 3.6 mph 83% Good soaking weather
Today 82° Low 51° Sunny 5% precip
Spring is +51° warmer
Wednesday 80° Low 51° Sunny 5% precip
Spring is +53° warmer
Thursday 80° Low 52° Sunny
Spring is +53° warmer
Friday 83° Low 56° Sunny
Spring is +50° warmer
Saturday 86° Low 57° Sunny
Spring is +47° warmer
Where to Stay

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Nearby Camping
Upper Oso Campground 11.1 mi away

Overview Upper Oso Campground provides ample opportunity for exploration of California's coastal mountains. It is a family-friendly campground, equipped with equestrian sites, and is close to a variety of trails and several mountain streams.Recreation A variety of hiking, mountain biking and horseback riding trails begin in and around the campground, including the Santa Cruz Trail, which traverses 18 miles north to the San Rafael Wilderness. The 2.5-mile Aliso National Recreation Trail leads...

Reservable Yes
Reserve on Recreation.gov →
Temperature
133°F
Warm Hot Boiling
Water Temp 133°F (56°C)
Avg Air Temp 61°F
Above Ambient +72°F
Great soaking conditions September
Access
Open
Road Access Short Walk
Distance to Road 0.2 mi
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Los Padres National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Agua Caliente Spring?
Agua Caliente Spring has a water temperature of 133°F (56°C). This is considered a hot spring, well above body temperature.
Where is Agua Caliente Spring located?
Agua Caliente Spring is located in Santa Barbara County, California at 2,372 feet elevation, near Toro Canyon. Coordinates: 34.5380°N, 119.5600°W.
How do I get to Agua Caliente Spring?
Agua Caliente Spring has Short Walk road access (0.2 mi from the road).
Is Agua Caliente Spring free to visit?
Agua Caliente Spring has Open access. It is managed by US Forest Service.
Can I camp near Agua Caliente Spring?
Yes, Upper Oso Campground is located nearby (11.1 miles away).
Is it safe to soak at Agua Caliente Spring?
With care. At 133°F Agua Caliente Spring is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.
Sources: Wikipedia