Santa Ysabel Springs (Sulphur Spr)

San Luis Obispo County, California · Near Paso Robles
35.5820°N, 120.6660°W · 858 ft
92°F 52°F air · Good soaking weather 858 ft Short Walk Camping nearby (11.4 mi)
Aerial view of the ground around Santa Ysabel Springs (Sulphur Spr) LiDAR bare-earth view of the same ground around Santa Ysabel Springs (Sulphur Spr)
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.

Santa Ysabel Springs, carried on the record as Sulphur Spring as well, sits well under two miles from Paso Robles. That is San Luis Obispo County. The water is at the low end of soaking temperature. Five hundred feet of walking from Hanging Tree Lane gets you there. Owner and access are both unrecorded, and this close to town you should assume you need permission until you learn otherwise.

Location
4 miles from El Paso de Robles, CA

Low country on the edge of Paso Robles, dry most of the year, no snow, short wet winters. Hanging Tree Lane is the nearest road. Nothing on file identifies a land unit, which leaves the practical question of who you ask. Paso Robles is close enough that this sits on the fringe of town.

Midwinter is what the record suggests. Camping is at Cerro Alto, eleven miles or thereabouts. The water is warm enough to soak and nowhere near hot enough to hurt. The big unknown is access, so learn who holds the land before you walk in from Hanging Tree Lane.

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 Santa Ysabel Springs (Sulphur Spr).

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

A slice through the ground from north to south, about 0.6 miles end to end.

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

Heat Below
105 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 54% 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
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
52°F
Clear N 0.0 mph 71% Good soaking weather
Tuesday 82° Low 52° Sunny
Spring is +10° warmer
Wednesday 78° Low 50° Mostly Sunny 3% precip
Spring is +14° warmer
Thursday 80° Low 49° Patchy Fog then Mostly Sunny
Spring is +12° warmer
Friday 87° Low 50° Sunny
Spring is +5° warmer
Saturday 90° Low 53° Sunny
Spring is +2° warmer
Nearby Camping
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
Warm air, warm water September
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).