Skillern Hot Springs

Camas County, Idaho · Near Fairfield
43.6470°N, 114.8160°W · 5,820 ft
140°F 5,820 ft Open Hike US Forest Service Camping nearby (4.3 mi)
Very Hot Source, Use Extreme Caution

At 140°F, the source water at Skillern Hot 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.

Aerial view of the ground around Skillern Hot Springs LiDAR bare-earth view of the same ground around Skillern Hot Springs
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.

Skillern Hot Springs sits on Sawtooth National Forest ground in Camas County, twenty miles from Fairfield, and you walk in. The water is hot, right at the upper edge of that range on the 1981 reading, and strongly alkaline. It is open, as far as access goes. Plan on two and a half miles on foot each way.

Location

Two and a half miles of walking from an unnamed road is what the record describes. High ground, national forest, managed by the Forest Service. Snow runs around twelve feet a winter. The yearly average temperature sits in the low forties, and the precipitation figure is moderate.

Bowns Campground is about four miles distant. December through February are listed as best, which with this much snow is worth thinking about before you commit to the walk. Where it surfaces the water can scald; check before you sit. That 1981 number may have drifted since.

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 Skillern Hot Springs.

Setting
Canyon floor
Steep ground climbs away on both sides of the spring.
Highest ground nearby
668 ft above the spring
Within a quarter mile, to the east
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
103 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 52% 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
22°
Jan
24°
Feb
30°
Mar
36°
Apr
44°
May
56°
Jun
67°
Jul
66°
Aug
56°
Sep
41°
Oct
30°
Nov
20°
Dec
Annual Precip: 27.4 in Annual Snow: 144.9 in
Best Time to Visit
December Air 20°F · Water 140°F · +120° contrast
January Air 22°F · Water 140°F · +118° contrast
February Air 24°F · Water 140°F · +116° contrast
December offers 47°F more contrast than July
Current Conditions
NNW 1.4 mph
Today 63° Low 42° Sunny
Spring is +77° warmer
Wednesday 69° Low 46° Sunny 7% precip
Spring is +71° warmer
Thursday 62° Low 42° Showers And Thunderstorms 83% precip
Spring is +78° warmer
Friday 62° Low 40° Mostly Sunny then Slight Chance Rain Showers 22% precip
Spring is +78° warmer
Saturday 65° Low 42° Sunny 6% precip
Spring is +75° warmer
Water Chemistry Sampled 1981-07-15

The water at Skillern Hot Springs is alkaline (pH 9.4).

pH 9.4 Alkaline
pH influences mineral absorption through skin
Calcium 3 mg/L
May support bone density and joint health
Magnesium 0 mg/L
Known for muscle relaxation and stress relief
Sodium 60 mg/L
Supports circulation and skin hydration
Sulfate 31 mg/L
Traditionally used for skin conditions and inflammation
Chloride 5 mg/L
Natural antiseptic with skin health benefits
Nearby Camping
Nearby Camping
Bowns Campground 4.3 mi away

Bowns Campground, located 25 miles east of Featherville and 18 miles north of Fairfield, is a developed campground composed of 10 units along Big Smoky Creek. Two of the camp sites are double family units.  Camping, fishing, hiking, and picnicking are popular activities. Campground amenities include picnic tables, fire rings, drinking water (seasonally) and restrooms. Miller Creek Trail (#087) starts just south of the campground and is open to motorcycles.

Reserve on Recreation.gov →
Mile-High Advisory 5,820 ft

Skillern Hot Springs sits at 5,820 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 23% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

As an Amazon Associate, we earn from qualifying purchases.

Temperature
140°F
Warm Hot Boiling
Water Temp 140°F (60°C)
Avg Air Temp 41°F
Above Ambient +99°F
Great soaking conditions September
Access
Open
Road Access Hike
Distance to Road 2.5 mi
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Sawtooth National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Skillern Hot Springs?
Skillern Hot Springs has a water temperature of 140°F (60°C). This is considered a hot spring, well above body temperature.
Where is Skillern Hot Springs located?
Skillern Hot Springs is located in Camas County, Idaho at 5,820 feet elevation, near Fairfield. Coordinates: 43.6470°N, 114.8160°W.
How do I get to Skillern Hot Springs?
Skillern Hot Springs has Hike road access (2.5 mi from the road).
Is Skillern Hot Springs free to visit?
Skillern Hot Springs has Open access. It is managed by US Forest Service.
Can I camp near Skillern Hot Springs?
Yes, Bowns Campground is located nearby (4.3 miles away).
What minerals are in the water at Skillern Hot Springs?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 9.4 (alkaline).
Is it safe to soak at Skillern Hot Springs?
With care. At 140°F Skillern Hot Springs 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: USGS NWIS