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Bywater Sauna — Alki

Alki · Seattle, Washington

$35–$40

Last verified September 2026

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Community sauna illustration

About Bywater Sauna — Alki

A barrel sauna parked on the Alki boardwalk running reserved-seat communal sessions, where guests cycle between the hot room and Puget Sound at their own pace. Sold as drop-in seats, a monthly membership, or a full-session buyout.

The details

“Not verified” means nobody has checked that detail yet — not that the answer is no.

Sauna

Sauna type
Traditional
Wood-fired
Not verified
Heat
Loyly is described ("Let the folks in the barrel know before pouring water on the rocks in the sauna") but no temperature and no fuel source appear anywhere on the site.

Cooling

Cold plunge
Not verified
Open water
Sea, lake, or river
Temperature
Cooling is by Puget Sound immersion; the session type is named "ALKI - Sauna & Swim". No dedicated cold tub is mentioned at this location.

Visit

Pricing
$35–$40
How to visit
Several ways to visit
Day pass
Available
Reservation
Required
Walk-ins
Not verified
Community sessions
Yes
Private or shared
Not verified
Towels
Bring your own
Showers
On site

Weekday session $35, weekend session $40. Membership $100 per month for unlimited sessions up to once per day, with one free guest pass monthly and a two-booking cap. Private buyout is seats multiplied by the per-seat price, so a 16-seater is $640.

Wellness

Massage
Not verified
Spa treatments
Not verified
Swimming pool
Not verified
Hot tub
Not verified
Steam room
Not verified

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