# Longmire Mineral Springs, Washington

Longmire Mineral Springs in Washington. 77°F (25°C). Short Walk · Public Land. Pierce County.

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

## Can you soak at Longmire Mineral Springs?

The water leaves the ground at 77°F, about as warm as a heated pool. It's a short walk from the road. It's on National Park Service land. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 77°F (25°C) (USGS record; developed pools are often cooled) |
| pH | 5.8 (Slightly Acidic) |
| Elevation | 2,758 ft |
| Access | Short Walk · Public Land, 433 ft from the nearest road (Longmire-to-Paradise Road) |
| Land | Mount Rainier National Park, National Park Service |
| County | Pierce County |
| Nearest town | Buckley |
| Coordinates | 46.75200, -121.81400 |
| Best months to soak | February, December, January (largest gap between water and average air temperature) |
| Nearest campground | COUGAR ROCK CAMPGROUND, 1.4 mi |

## About Longmire Mineral Springs

Longmire Mineral Springs are a cluster of mineral seeps inside Mount Rainier National Park, Pierce County, Washington. The reading on file puts them in the high seventies, warm to the hand and nothing more. This is a spring to look at. Access is open, and the closest town in the record, Buckley, is about thirty miles off.

The springs sit a few hundred feet off the Longmire-to-Paradise Road, on National Park Service land. Elevation is moderate, under three thousand feet, on the lower part of the mountain. The climate is the wettest kind: ninety inches of precipitation with a winter snowpack measured in hundreds of inches, according to the record.

Longmire sits within Mount Rainier National Park, and USGS holds a site record for the springs that includes a water sample from September 1983.

Cougar Rock Campground is about a mile and a half away. Winter months are rated best on file, but the Longmire-to-Paradise Road sees heavy snow, so check if the park has it open. National park rules apply. The chemistry sample, from 1983, found the water mildly acidic with iron and sulfate present. No burn risk at these temperatures.

## Water chemistry

Lab sample from 1983-09-02 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 5.8 |
| Calcium | 500 mg/L |
| Magnesium | 190 mg/L |
| Sodium | 710 mg/L |
| Sulfate | 30 mg/L |
| Chloride | 940 mg/L |
| Iron | 70 µg/L |

## Nearby

- Nearest city page: [Hot springs near Enumclaw](https://www.soakingsprings.com/hot-springs/near/washington/enumclaw), 32 mi away
- State page: [Hot springs in Washington](https://www.soakingsprings.com/hot-springs/washington)
- [Mt Rainier Fumaroles, WA](https://www.soakingsprings.com/hot-springs/washington/mt-rainier-fumaroles): 162°F source, Roadside, near Buckley, Pierce County
- [Ohanapecosh Hot Springs, WA](https://www.soakingsprings.com/hot-springs/washington/ohanapecosh-hot-springs): 122°F source, pH 6.6, Roadside, near Buckley, Pierce County, not a soaking spring, free
- [Packwood Hot Spring, WA](https://www.soakingsprings.com/hot-springs/washington/packwood-hot-spring): 100°F source, Short Walk, near Morton, Lewis County
- [Orr Creek Warm Springs, WA](https://www.soakingsprings.com/hot-springs/washington/orr-creek-warm-springs): 72°F source, Short Walk, near White Salmon, Klickitat County
- [Green River Soda Spring, WA](https://www.soakingsprings.com/hot-springs/washington/green-river-soda-spring): 86°F source, Roadside, near Morton, Lewis County
- [Lester Hot Springs, WA](https://www.soakingsprings.com/hot-springs/washington/lester-hot-springs): 120°F source, Short Walk, near Riverbend, King County, private, no public access

## Questions

**What is the water temperature at Longmire Mineral Springs?**
Longmire Mineral Springs has a water temperature of 77°F (25°C). This is a warm thermal spring.

**Where is Longmire Mineral Springs located?**
Longmire Mineral Springs is located in Pierce County, Washington at 2,758 feet elevation, near Buckley. Coordinates: 46.7520°N, 121.8140°W.

**How do I get to Longmire Mineral Springs?**
Longmire Mineral Springs has Short Walk road access, with the nearest road being Longmire-to-Paradise Road (433 ft from the road).

**Is Longmire Mineral Springs free to visit?**
Longmire Mineral Springs has Open access. It is managed by National Park Service.

**Can I camp near Longmire Mineral Springs?**
Yes, Cougar Rock Campground is located nearby (1.4 miles away).

**What minerals are in the water at Longmire Mineral Springs?**
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 5.8 (slightly acidic).

## Sources

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