Feel like you got away,
without leaving Toronto.
75 minutes of sauna, cold plunge, fire and rest on Lake Ontario.
A Nordic ritual, floating on Toronto’s waterfront.
Feel like you got away,
without leaving Toronto.
75 minutes of sauna, cold plunge, fire and rest on Lake Ontario.
A Nordic ritual, floating on Toronto’s waterfront.
Heat. Cold. Rest.
One ritual.
A floating spa moored at the Outer Harbour Marina — wood-fired sauna, lake plunge, and a fire pit to come back to. No screens, no rush: move through the cycle at your own pace.
Sauna 85°
Twenty minutes in the wood-fired sauna. Cedar, gentle löyly heat, and the slow loosening of everything you carried in with you.
Plunge 4–20°
Two minutes in Lake Ontario. The cold quickens the blood, steadies the mind, and leaves a deep, clear calm in its wake.
Rest
Wrapped and warm by the fire or out on the deck, letting the body settle. This is where the reset quietly lands — and why you'll come back.
01 · Sauna
02 · Plunge
03 · Rest
Repeat the cycle. You leave feeling calm, refreshed, and ready for the week.
Escape, without the drive.
Every version of this feeling lived at a cottage or an hour out of town. We wanted it ten minutes from downtown. Celsius is that: sauna, lake, fire — on the water, all year.
— Abbas & Yousuf, founders
Two ways to be on the water.
Every session is 75 minutes on the water. Reserve a spot in a community session, or take the whole floating spa for your group.
Community Session
Book your spot. Up to eight guests share the sauna, the plunge and the fire — small enough to stay quiet.
Private Session
The whole floating spa, just your group. Date night, birthdays, teams, or a slow Sunday with friends.
Arrive 20 minutes before your session to change. Bring a swimsuit and a towel, or rent one on the dock.
Be one of the first {{ founderSpots }}.
We're welcoming a small founding circle before Celsius opens to the public. Founding members are first on the water, with a session every day and a rate that stays locked for as long as you stay. Once the 25 spots are filled, new members join a waitlist.
Daily access.
40% off the regular rate, locked for as long as you stay.
Two guest passes, every month.
One complimentary full-facility booking, per year.
Free towel rental, every visit.
Hear about new sessions first.
Sessions are limited to 8 guests each and fill quickly. Join the list for new time slots, membership options and member offers before they go public.
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Ready now? Book Now →
Almost there.
We've opened the signup in a new tab — finish there and you're on the list for opening dates, new memberships, first booking access and launch offers.
Founding Membership is open now — 25 spots at $250/mo, locked for life.
Book a sessionQuestions? You're in the right place.
Most of our guests had never done a sauna-and-plunge session before their first visit. Here's what to bring, what to expect and how it feels. Anything we haven't covered — write to us.
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Ten minutes from downtown. A world from it.
475 Unwin Ave, Toronto
Free parking on site