# Roystone Hot Springs, Idaho

Roystone Hot Springs in Idaho. 151°F (66°C). Short Walk. Gem County.

- Page: https://www.soakingsprings.com/hot-springs/idaho/roystone-hot-springs
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Roystone Hot Springs?

Yes. Roystone Hot Springs is a developed hot spring with pools from 95 to 104°F. Reservations are required.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 151°F (66°C) (USGS record; developed pools are often cooled) |
| Elevation | 2,530 ft |
| Access | Short Walk, 0.1 mi from the nearest road (East Black Canyon Highway) |
| County | Gem County |
| Nearest town | Emmett |
| Coordinates | 43.95100, -116.35300 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | SHAFER BUTTE, 17.7 mi |

## Plan your visit

| | |
|---|---|
| Type | Developed pools |
| Cost | Priced per private session; amounts not published in sources found |
| Season | Year-round |
| Reservations | Required |
| Pool temperature | 95–104°F |
| Clothing | Swimsuit required |
| Getting there | Drive-up resort near Sweet |
| In winter | Covered pool open in cold weather |
| Operator | Roystone Hot Springs, https://roystonehotsprings.com/ |

Checked October 2026. Sources: https://www.hotspringsguides.com/hot-springs/roystone-hot-springs-idaho, https://roystonehotsprings.com/, https://hotspringslocator.com/roystone-hot-springs

## Soaking safety

**Very Hot Source, Use Extreme Caution.** At 151°F, the source water at Roystone 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.

## About Roystone Hot Springs

Roystone Hot Springs is in Gem County, about nine miles from Emmett, and the water is scalding. The USGS reading sits well above what skin can take, so this is no place to get in without knowing the flow has cooled somewhere. Nothing on file names an owner or says if you can visit. No water chemistry is recorded.

East Black Canyon Highway is about a tenth of a mile off, a short walk. The spring sits low, where the yearly average is mild. Snow is light, under three feet a year, and precipitation is modest. Emmett is the closest town in the record.

Shafer Butte campground is the nearest listed, about eighteen miles away. Midwinter is the recommended time, January first. The source temperature is far above safe. Do not touch the outflow directly and keep pets and children away from it. With no owner recorded, confirm you are allowed there before visiting. No chemistry has been taken, so what the water carries is anyone's guess.

## Nearby

- Nearest city page: [Hot springs near Emmett](https://www.soakingsprings.com/hot-springs/near/idaho/emmett), 9 mi away
- State page: [Hot springs in Idaho](https://www.soakingsprings.com/hot-springs/idaho)
- [Sweet Warm Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/sweet-warm-spring): 68°F source, pH 7.2, TDS 580 mg/L, Roadside, near Emmett, Gem County
- [Highland Land Co Warm Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/highland-land-co-warm-spring): 73°F source, Short Walk, near Emmett, Gem County
- [Deer Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/deer-hot-springs): 176°F source, pH 8.2, Short Walk, near Idaho City, Boise County
- [Terteling Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/terteling-hot-springs): 106°F source, Roadside, near Garden City, Ada County
- [Warm Springs Creek Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/warm-springs-creek-hot-springs): 167°F source, pH 8.4, TDS 307 mg/L, Roadside, near Idaho City, Boise County
- [Hot Spring Campground, ID](https://www.soakingsprings.com/hot-springs/idaho/hot-spring-campground): 124°F source, pH 9.0, Roadside, near Idaho City, Boise County, primitive pools

## Questions

**What is the water temperature at Roystone Hot Springs?**
Roystone Hot Springs has a water temperature of 151°F (66°C). This is considered a hot spring, well above body temperature.

**Where is Roystone Hot Springs located?**
Roystone Hot Springs is located in Gem County, Idaho at 2,530 feet elevation, near Emmett. Coordinates: 43.9510°N, 116.3530°W.

**How do I get to Roystone Hot Springs?**
Roystone Hot Springs has Short Walk road access, with the nearest road being East Black Canyon Highway (0.1 mi from the road).

**Can I camp near Roystone Hot Springs?**
Yes, Shafer Butte is located nearby (17.7 miles away).

**Is it safe to soak at Roystone Hot Springs?**
No, not at the source. The water at Roystone Hot Springs reaches 151°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals