Cold Plunge & Sauna in Portland: How to Choose a Bathhouse or Studio

Portland's sauna scene leans toward bathhouses and sauna houses rather than recovery clinics, and most of it sits on the inner east side. One thing varies more here than in most cities: the cold option. Some venues have plunge tubs, some rely on cold showers, and one uses the Columbia River.

This guide groups the Portland venues in our directory by format and lists what to confirm before booking. It is not a ranking. We checked each venue's details against its own website on 9 October 2026; terms change, so confirm them with the operator.

Choose by format

Thermal bathhouses

Knot Springs in the Central Eastside combines hot soaking pools, a sauna, steam rooms, and a 47°F cold plunge in its Springs area. It is for adults 18 and over, and swimwear is required.

CASCADA Thermal Springs on Alberta Street is a hotel thermal spa with a social Conservatory pool, an outdoor garden with a hot pool and sauna, and an underground silent Sanctuary with pools, sauna, steam, and a cold plunge. Day passes and memberships are for guests 21 and over.

The Everett House in Kerns is a co-ed, clothing-optional spa for guests 18 and over, with a salt hot tub, saunas, a steam room, two cold plunge tubs, and an outdoor fire ring. Sessions are booked by appointment.

Clothing and age rules differ sharply between these three, so read each policy before booking, especially if you are visiting with someone else.

Finnish sauna houses

Löyly Northeast and Löyly Southeast are Finnish-style sauna houses with a sauna, showers, and a lounge, for visits of up to two hours, with massage and facials available. Swimwear is required. They cool down with showers rather than a plunge tub, which suits people who want traditional sauna without cold immersion.

Private contrast studios

Shiver & Sweat on North Williams runs 60-minute private contrast sessions pairing a full-spectrum infrared sauna with a cold plunge and shower, plus infrared-only and red light sessions.

Core Longevity in Hollywood offers a one-hour circuit of infrared sauna, cold plunges at 60°F and 45°F, red light, a salt room, and compression, with hyperbaric and float sessions also available, for guests 14 and over.

Two plunge temperatures, as at Core Longevity, let you choose a less intense option; ask staff how first-time visitors usually use them. Our first-visit checklist covers the other questions to ask.

Floating river sauna

Ebb & Ember is a floating sauna docked at a Columbia River marina, with a bucket shower, a cold shower on the deck, and river plunging. Shared social sessions are unstaffed and self-guided, and private rentals are available. River plunging is open water: read the operator's rules and conditions before your visit, and use the showers instead if you are not comfortable in open water.

Booking and what to bring

Most Portland venues book online in advance. Because clothing rules range from swimwear-required to clothing-optional, check the policy and pack accordingly; see what to bring. If you are deciding between infrared and traditional heat, our sauna format guide explains the difference.

Cold water and heat are not suitable for everyone. If you have a health condition or any doubt, speak to a healthcare professional before booking.

How we compiled this guide

We list venues that offer sauna or cold plunge access to the public in Portland and checked each one's facilities and booking model against its own website on 9 October 2026. We have not visited them, and inclusion is not an endorsement. Paid placements, if any, are labelled. Operators can suggest a correction. See our editorial policy.