Santa Ysabel Springs (Sulphur Spr)

San Luis Obispo County, California · Near Paso Robles
35.5820°N, 120.6660°W · 858 ft
92°F 858 ft Short Walk Camping nearby (11.4 mi)

Santa Ysabel Springs, also known as Sulphur Springs, delivers 92°F thermal water in the rolling hills east of Paso Robles. The 31-degree temperature rise above ambient marks a noticeable thermal feature in wine country.

Location

The spring emerges at 858 feet elevation just 156 feet from Hanging Tree Lane. The landscape consists of grassy rolling hills typical of the Paso Robles region, with the small thermal pool surrounded by oak and dry chaparral vegetation typical of central California's interior valleys.

The spring lies only 156 feet from Hanging Tree Lane, making it highly accessible. Visit spring or fall for comfortable visiting conditions. The nearby Paso Robles wine region and Morro Bay beaches offer additional recreation options.

History of Santa Ysabel Springs (Sulphur Spr)

Named for its sulphur content, Santa Ysabel Springs sits in the broader San Luis Obispo County thermal system. The Paso Robles region has been recognized for geothermal activity since Spanish colonial times.

Monthly Climate
49°
Jan
51°
Feb
54°
Mar
59°
Apr
63°
May
69°
Jun
72°
Jul
72°
Aug
71°
Sep
65°
Oct
55°
Nov
48°
Dec
Annual Precip: 11.3 in Annual Snow: 0.0 in
Best Time to Visit
December Air 48°F · Water 92°F · +44° contrast
January Air 49°F · Water 92°F · +43° contrast
February Air 51°F · Water 92°F · +41° contrast
December offers 24°F more contrast than August
Current Conditions
81°F
Clear N 0.0 mph 39%
This Afternoon 86° Low 49° Sunny
Spring is +6° warmer
Friday 91° Low 50° Patchy Fog then Mostly Sunny
Spring is +1° warmer
Saturday 88° Low 51° Sunny
Spring is +4° warmer
Sunday 92° Low 52° Mostly Sunny
Monday 92° Low 51° Sunny
Where to Stay

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Nearby Camping
Cerro Alto Campground 11.4 mi away

Overview Cerro Alto Campground is a well-known hiking and mountain biking paradise. It is located a short distance from the sandy beaches of Morro Bay, where visitors enjoy surfing, fishing, kayaking, sailing, scuba diving and more. While the campground offers a serene, relaxed environment, both Morro Bay and the nearby town of Atascadero offer numerous dining opportunities, shopping, museums and other activities. Wine Tasting in the Tempelton, Paso Robles Area is also a very popular experi...

Reservable Yes
Reserve on Recreation.gov →
Temperature
92°F
Warm Hot Boiling
Water Temp 92°F (33°C)
Avg Air Temp 61°F
Above Ambient +31°F
Mild soaking conditions May
Access
Road Access Short Walk
Nearest Road Hanging Tree Lane
Distance to Road 510 ft
Frequently Asked Questions
What is the water temperature at Santa Ysabel Springs (Sulphur Spr)?
Santa Ysabel Springs (Sulphur Spr) has a water temperature of 92°F (33°C). This is a warm thermal spring.
Where is Santa Ysabel Springs (Sulphur Spr) located?
Santa Ysabel Springs (Sulphur Spr) is located in San Luis Obispo County, California at 858 feet elevation, near Paso Robles. Coordinates: 35.5820°N, 120.6660°W.
How do I get to Santa Ysabel Springs (Sulphur Spr)?
Santa Ysabel Springs (Sulphur Spr) has Short Walk road access, with the nearest road being Hanging Tree Lane (510 ft from the road).
Can I camp near Santa Ysabel Springs (Sulphur Spr)?
Yes, Cerro Alto Campground is located nearby (11.4 miles away).
Is it safe to soak at Santa Ysabel Springs (Sulphur Spr)?
Santa Ysabel Springs (Sulphur Spr) is generally safe for soaking at its recorded 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 Santa Ysabel Springs (Sulphur Spr) crowded?
Santa Ysabel Springs (Sulphur Spr) sees varying levels of visitors depending on the season and day of the week.
What should I bring to Santa Ysabel Springs (Sulphur Spr)?
Essentials for Santa Ysabel Springs (Sulphur Spr): swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in.