# Castle Hot Springs, Arizona

Castle Hot Springs in Arizona. 115°F (46°C). Short Walk. Yavapai County.

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

## Can you soak at Castle Hot Springs?

Yes. Castle Hot Springs is a developed hot spring. Only overnight guests can use the pools. Reservations are required. Age limit: 18+.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 115°F (46°C) (USGS record; developed pools are often cooled) |
| pH | 7.7 (Slightly Alkaline) |
| Elevation | 2,120 ft |
| Access | Short Walk, 0.2 mi from the nearest road (Castle Hot Springs Road) |
| County | Yavapai County |
| Nearest town | Black Canyon City |
| Coordinates | 33.98800, -112.36200 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | HORSETHIEF CABIN, 12.6 mi |

## Plan your visit

| | |
|---|---|
| Type | Developed pools |
| Cost | Overnight guests only |
| Season | Year-round |
| Reservations | Required |
| Ages | 18+ |
| Getting there | resort near Black Canyon City |
| Operator | Castle Hot Springs, https://www.castlehotsprings.com |

Checked October 2026. Sources: https://www.castlehotsprings.com, https://www.findinghotsprings.com/mag/castle-hot-springs

## About Castle Hot Springs

Castle Hot Springs is a historic resort in the Hieroglyphic Mountains of Yavapai County, about fifteen miles from Black Canyon City, and it is hot in earnest, right around 115 degrees at the source by the record. Wikipedia notes the resort has recently been restored and is on the National Register of Historic Places. The access line is blank, and so is the landowner. A 1979 chemistry sits in the USGS record.

Castle Hot Springs Road runs within a couple hundred yards of the spring, so reaching it takes a short walk at most. Low desert, around two thousand feet, with mild winters and almost no snow. Across a year the thermometer averages close to seventy. Horsethief Cabin, a dozen or so miles away, is as close as camping gets in the record. The 1979 water sample shows a slightly alkaline pH.

Wikipedia describes Castle Hot Springs as a recently restored historic resort listed on the National Register of Historic Places, set within the Hieroglyphic Mountains. The USGS sampled the water in June 1979.

Go in winter if you can, December through February per the record. The water is above 110, so test before stepping in and assume the source is hotter than any pool. The spring sits on a resort, so treat access as the resort's call and check ahead. For camping the record gives Horsethief Cabin, a drive away. No fee information is listed.

## Water chemistry

Lab sample from 1979-06-22 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 7.7 |
| Calcium | 29 mg/L |
| Magnesium | 2.3 mg/L |
| Sodium | 220 mg/L |
| Sulfate | 220 mg/L |
| Chloride | 140 mg/L |

## Nearby

- Nearest city page: [Hot springs near Peoria](https://www.soakingsprings.com/hot-springs/near/arizona/peoria), 15 mi away
- State page: [Hot springs in Arizona](https://www.soakingsprings.com/hot-springs/arizona)
- [Castle Hot Springs (Arizona), AZ](https://www.soakingsprings.com/hot-springs/arizona/castle-hot-springs-arizona): pH 7.7, Roadside, near Black Canyon City, Yavapai County
- [Mitchell Spring, AZ](https://www.soakingsprings.com/hot-springs/arizona/mitchell-spring): 79°F source, pH 8.0, Short Walk, near Anthem, Maricopa County
- [Spring, AZ](https://www.soakingsprings.com/hot-springs/arizona/spring-yavapai-county): 72°F source, TDS 474 mg/L, Roadside, near Prescott, Yavapai County
- [Spring (Hot), AZ](https://www.soakingsprings.com/hot-springs/arizona/spring-hot-maricopa-county): 99°F source, Roadside, near Carefree, Maricopa County
- [Verde Hot Springs, AZ](https://www.soakingsprings.com/hot-springs/arizona/verde-hot-springs): 104°F source, pH 6.5, Roadside, near Camp Verde, Yavapai County, primitive pools, free, year-round
- [El Dorado Hot Spring, AZ](https://www.soakingsprings.com/hot-springs/arizona/el-dorado-hot-spring): Roadside, near Buckeye, Maricopa County, developed pools, day pass, oct-jun

## Questions

**What is the water temperature at Castle Hot Springs?**
Castle Hot Springs has a water temperature of 115°F (46°C). This is considered a hot spring, well above body temperature.

**Where is Castle Hot Springs located?**
Castle Hot Springs is located in Yavapai County, Arizona at 2,120 feet elevation, near Black Canyon City. Coordinates: 33.9880°N, 112.3620°W.

**How do I get to Castle Hot Springs?**
Castle Hot Springs has Short Walk road access, with the nearest road being Castle Hot Springs Road (0.2 mi from the road).

**Can I camp near Castle Hot Springs?**
Yes, Horsethief Cabin is located nearby (12.6 miles away).

**What minerals are in the water at Castle Hot Springs?**
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.7 (slightly alkaline).

**Is it safe to soak at Castle Hot Springs?**
With care. At 115°F Castle 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 thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals
- https://en.wikipedia.org/wiki/Castle_Hot_Springs_(Arizona)