The best saunas in Seattle & Puget Sound
Last reviewed October 2026
At Alki Beach a wood-fired cedar barrel sets up on the shore, and the plunge is Puget Sound. On Lake Washington the saunas sit on barges. On Lake Union the whole banya is a boat, moored at a marina.
#1 · Von Sauna
Two wood-fired barges on Lake Washington · Kirkland
A social session sells you a seat rather than the room, so you can move between the cedar sauna and the magnolia one. Both are wood-fired, on barges moored at the public pier in the Carillon Point marina. Between rounds, a swim ladder takes you down into Lake Washington.
Floating · Finnish · $$ · Cold plunge · Session-booked
#2 · Hot Rocks Sauna Club
West Seattle's wood-fired beach barrel · Seattle
The barrel is cedar and wood-fired, and a dozen or so share the heat at a session on Alki Beach. Between rounds the cold side is Puget Sound. Its spot on the beach moves with the operator's parks permit, and a group can hire the whole barrel.
Finnish · $$ · Cold plunge · Session-booked
#3 · Banya Boat
A whole banya afloat on Lake Union · Seattle
The boat is moored at a marina on Lake Union, and your group has it to itself. There is a cedar dry sauna, a steam sauna and a cold plunge, plus a wood-fired hot tub and a lounge on the upper deck. A banya master can add a venik ritual, with birch or oak.
Banya · Steam · Floating · $$ · Cold plunge · Private hire
#4 · Banya 5
Four bathing traditions in South Lake Union · Seattle
Banya 5 is compact. The circuit is not: parilka, eucalyptus steam room, ice bath, saltwater pool and hot tub. Since 2004 it has blended Russian, Turkish, Finnish and Japanese bathing in South Lake Union, with platza treatments and a nap room alongside.
Banya · Finnish · Steam · $$ · Cold plunge · Session-booked
#5 · SeaTsu Sauna
Horse trailers turned wood-fired saunas · Clallam County
SeaTsu's two wood-fired saunas began as vintage horse trailers and now stand in a forest in Blyn, on the Olympic Peninsula. You change in a cedar dome. Between rounds there is a saltwater cold plunge, and you can come for a co-ed session, the women-only night, a private booking or an overnight stay.
Finnish · $$ · Cold plunge · Session-booked
#6 · Bywater Sauna
Golden Gardens, at your own pace · Seattle
Book online first, then find the sauna beside open water at Golden Gardens or Alki Beach. Nobody times your rounds. You move between the heat and the water as you please, rinse under the outdoor showers, and dry off with the towel you brought.
Finnish · $$ · Cold plunge · Session-booked
#7 · Svette Sauna Tacoma
A trailer sauna at Point Defiance · Tacoma
Svette parks its trailer sauna on Owen Beach in Point Defiance Park, looking across Commencement Bay. You throw your own löyly on the stones, then cool off in Puget Sound itself. Sessions are co-ed, and everyone wears swimwear.
Finnish · $$ · Drop-in
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That's the shortlist. See every curated sauna in Seattle & Puget Sound in the full Seattle & Puget Sound guide.