Sol Duc Hot Springs
Sol Duc Hot Springs flows at 122 degrees Fahrenheit in Olympic National Park with permanently protected Class 1 status under National Park Service management. Water chemistry shows a pH of 9.5 and total dissolved solids of 262 milligrams per liter, with sodium-dominated mineralization. The spring emerges at 1,640 feet elevation just 25.2 meters from the road near the resort, creating a 74.8-degree thermal difference above ambient temperature in the temperate rainforest environment.
The spring sits in the lush interior valley of the Olympic Mountains where the Sol Duc River drains westward through old-growth temperate rainforest. At 1,640 feet elevation, annual precipitation totals 82.9 inches with 130.7 inches of snow, supporting dense stands of Douglas fir, western hemlock, Sitka spruce, and western redcedar. The valley bottom's relatively moderate elevation keeps average temperatures at 47.2 degrees, with the maritime influence preventing temperature extremes. The surrounding peaks rise to over 7,000 feet, creating a dramatic setting where glaciated ridges frame the forested valley. The Sol Duc River flows clear and cold alongside the hot springs, providing the temperature contrast necessary for comfortable bathing.
The name 'Sol Duc' derives from the Klallam language, with various translations suggested including 'sparkling water' or 'magic water,' reflecting Indigenous recognition of the thermal feature. Euro-American development began in the early 1900s with construction of a resort, though the original facilities burned. The current resort dates to later rebuilding efforts, operating under concession permit within the national park. Olympic National Park's 1938 establishment placed the springs under permanent federal protection.
Visit from spring through fall when the resort operates, typically late March through October, with exact dates varying by season. Pool access costs $19 for adults with towel rentals available, or bring your own. The Sol Duc Hot Springs Resort Campground sits 500 meters away providing convenient lodging. The resort's developed pools mix the 122-degree source water to comfortable bathing temperatures. Combine with hiking to Sol Duc Falls or the Seven Lakes Basin, both accessible from nearby trailheads. Park entry fees apply.
Is Sol Duc Hot Springs worth visiting?
Best for
- Hot spring soaking
- Easy day trips
- Overnight camping trips
The water at Sol Duc Hot Springs is alkaline (pH 9.5) with 262 mg/L total dissolved solids.
Overview For up to date pool schedule information, please visit our website here. Pool access fees are $19 for adults, $15 for children ages 4-12 and $15 for seniors over 62 years old per session. Towel rentals are $5. You may bring your own towel. Lockers are available, but locks are not provided. Located along the Sol Duc River, Sol Duc Hot Springs Resort Campground is on the "edge of the backcountry in the heart of the Olympic National Park" with hot spring pools and access to many hiking...