2 natural hot springs within 50 miles of Mercer Island, Washington — sorted by driving distance from the city center. Each listing links to its full guide with water temperature, access type, and seasonal conditions.
Last updated: October 2026
Researched & maintained by Chester Beard · Conservation Photographer · Sierra Club, The Nature Conservancy
Data from USGS, OpenStreetMap, NOAA · Disclosure
Washington · 109°F · Hike-in
36.4 mi
Washington · Drive-up
40.6 mi
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Turn these springs into a road-trip route with camping and lodging along the way.
See Mercer Island springs on Washington Hot Springs with maps, photos, and local tips.