Parks & outdoors / Belle Isle
SOMi Sauna on Belle Isle Beach
A wood-fired cedar sauna trailer on the sand of Belle Isle Beach, facing downtown: a 75-minute session is $29.50, ten seats, with a plunge in the Detroit River.
01 / The story of this place
Make time for these
SOMi Sauna, a mobile sauna from Southeast Michigan, parks on Belle Isle Beach on select weekends this fall and winter, on the sand just west of the Beach House. The hot room runs 180–205°F (82–96°C) on two tiers of cedar for ten people. You ladle water on the stones, and the wave of steam is what Finns call löyly. To cool off you walk into the river, about 60°F (16°C) in October and in the mid-30s by February; a beach chair cools you just as well if you would rather stay dry. Across the water are downtown and the MacArthur Bridge, and in winter the sun sets almost right behind the towers, which is why evening sessions fill first. It runs in rain and snow.
- Wood-fired cedar sauna on the beach
- 75-minute session $29.50
- Ten seats per session
- Plunge in the Detroit River
- Ages 18 and over
A closer look
Photos were taken at different times; images are resized and cropped on cards.
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¼ · Stay
Sleep right around the corner
Sources & fact check · Checked: 2026-10-23
An independently written bilingual guide. This collection is not an attendance-based ranking.
Practical guide · Belle Isle
SOMi Sauna: everything you need before you go
Dates, prices, what to bring, the rules, how to get onto the island and whom to email. Everything comes from SOMi Sauna’s own page and the Michigan DNR, as of October 23, 2026.
Checked: 2026-10-23
01 / When can you go, and what does it cost?When can you go, and what does it cost?
- One session
- $29.5075 minutes, per person
- Discount
- 20% / 10%booked 3+ weeks or 11+ days ahead
- Seats
- 10per session
- Age
- 18+no under-18s
| Weekend | Days |
|---|---|
| Oct 24–25, 2026 | Saturday and Sunday |
| Nov 14–15, 2026 | Saturday and Sunday |
| Nov 28–29, 2026 | Saturday and Sunday |
| Dec 12–13, 2026 | Saturday and Sunday |
| Jan 16–17, 2027 | Saturday and Sunday |
| Jan 30–31, 2027 | Saturday and Sunday |
| Start–end | Note |
|---|---|
| 10:00–11:15 a.m. | first session |
| 11:30 a.m.–12:45 p.m. | |
| 1:00–2:15 p.m. | |
| 2:30–3:45 p.m. | |
| 4:00–5:15 p.m. | |
| 5:30–6:45 p.m. | |
| 7:00–8:15 p.m. | last session |
Sources: SOMi Sauna: Belle Isle Residency
Back to contents ↑02 / How does a session work?How does a session work?
- Heat: 10–20 minutes in the 180–205°F (82–96°C) cedar room. Heat gathers on the upper bench; the steam wave from water on the stones is löyly. Check the room before you ladle: it should suit everybody.
- Cool: the Detroit River is about 60°F (16°C) in October and in the mid-30s by February; 30 seconds is plenty. Walk in, stand still and let the first gasp pass. A beach chair cools you just as well if you stay dry.
- Repeat: switch as often as you like; nothing in your 75 minutes runs on a clock. Most people do two or three rounds. Keep drinking: you lose about a pint an hour.
Sources: SOMi Sauna: Belle Isle Residency
Back to contents ↑03 / What to bring, and the rulesWhat to bring, and the rules
Bring
- Swimsuit: required, this is a public beach. Easiest worn under your clothes.
- Towel and sandals for the walk to the water.
- Water, more than you think: drink before you arrive and keep a bottle with you.
- Warm layers for afterwards if it is cold.
- Something salty and an electrolyte drink for after: you lose salt as well as water.
Rules
- Arrive 10 minutes early so you start on time.
- Every guest signs a waiver, including guests you booked for: about a minute on a phone, valid all season. Add their emails at checkout and the links go to them; anyone arriving without one scans the code on the sauna door. Waiver ↗
- Ages 18 and over only.
- Come sober: heat and alcohol both lower blood pressure. It is the one rule they hold firmly.
- Walk into the water, never jump; come out if your hands stop working properly.
- Pregnant or managing a heart condition? Talk to your doctor first.
- Step out whenever you want, or drop to the lower bench.
Sources: SOMi Sauna: Belle Isle Residency
Back to contents ↑04 / Where exactly, and how do you get there?Where exactly, and how do you get there?
The cedar trailer sits on the sand of Belle Isle Beach, just west of the Beach House; you can see it from the road. The beach lot is free; walk west from there. You reach the island over the MacArthur Bridge from East Jefferson Avenue, about ten minutes from downtown.
Sources: SOMi Sauna: Belle Isle Residency · Michigan DNR: Recreation Passport · Belle Isle Conservancy
Back to contents ↑05 / ContactContact
- SOMi Saunahello@somisauna.com · Instagram: @somi.sauna ↗ · no phone number publishedsomisauna.com ↗
Prices and dates as published by SOMi Sauna; check their page before you book.
03 / Events
Events at this place
Published events automatically linked from our event guide. Times are local to the venue.
Oct 24, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna's wood-fired cedar sauna sets up on the sand at Belle Isle Beach in Detroit on Saturday, October 24, with sessions from 10 a.m. to 7 p.m. and the city skyline across the river. A 75-minute session is $29.50, booked ahead.
Oct 25, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna parks its wood-fired cedar sauna trailer on the sand at Belle Isle Beach in Detroit on Sunday, October 25, with sessions from 10 a.m. to 7 p.m. and the city skyline across the river. Book a 75-minute session online.
Nov 14, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna sets up its wood-fired cedar sauna on the sand at Belle Isle Beach in Detroit on Saturday, November 14, with sessions from 10 a.m. to 7 p.m. and the city skyline across the river. Book a 75-minute session for $29.50.
Nov 15, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna parks its wood-fired cedar sauna trailer on the sand at Belle Isle Beach in Detroit on Sunday, November 15, from 10 a.m. to 7 p.m., with the city skyline across the river. Sessions start at $29.50 and you book ahead.
Nov 28, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna's wood-fired cedar sauna trailer sits on the sand at Detroit's Belle Isle Beach on Saturday, November 28, from 10 a.m. to 7 p.m., with the skyline across the river. A 75-minute session costs $29.50.
Nov 29, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna's wood-fired cedar sauna trailer sits on the sand at Belle Isle Beach in Detroit on Sunday, November 29, with sessions from 10 a.m. to 7 p.m. and the city skyline across the river. A 75-minute session is $29.50, booked in advance.
Dec 12, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna sets up its wood-fired cedar sauna on the sand at Belle Isle Beach in Detroit on Saturday, December 12, with sessions from 10 a.m. to 7 p.m. and the skyline across the river. A 75-minute session is $29.50, booked ahead.
Dec 13, 2026, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna's wood-fired cedar sauna trailer sits on the sand at Belle Isle Beach in Detroit on Sunday, December 13, with sessions from 10 a.m. to 7 p.m. and the city skyline across the river. Book ahead; a 75-minute session is $29.50.
Jan 16, 2027, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna parks its wood-fired cedar sauna on the sand at Belle Isle Beach in Detroit on Saturday, January 16, with sessions from 10 a.m. to 7 p.m. and the city skyline across the river. Book a seat online for $29.50 per 75-minute session.
Jan 17, 2027, 10:00 AMWood-Fired Sauna at Belle Isle Beach
SOMi Sauna's wood-fired cedar sauna trailer sits on the sand at Belle Isle Beach in Detroit on Sunday, January 17, from 10 a.m. to 7 p.m., with the skyline across the river. A 75-minute session is $29.50, and you book ahead online.
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