Twanoh State Park
Union, WA
Twanoh State Park sits in a protected, shallow bend of Hood Canal, genuinely one of the warmest saltwater swimming spots in Washington. Shallow mudflats plus an incoming tide push the water into the upper 60s and low 70s in summer, a real, corroborated distinction from the colder water typical of this part of the Sound.
The warm water claim is well corroborated and genuinely differentiating for a Puget Sound area beach guide, a real standout.
How we score beachesThis is the Hood Canal beach to pick specifically for warm water; the shallow bay setup here is what makes it noticeably warmer than nearby parks.
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