Lonna Sauna
론나 사우나 (Lonna Sauna)
Hand-carved log wood-burning sauna on an island off Helsinki
About this place
NotesWood-burning sauna on an island off Helsinki. Loft-style saunas built from hand-carved logs, followed by a dive into archipelago waters. SAUNA37 selected.
Practical notes
Selected for SAUNA37 World Sauna Awards 2026. Located on Lonna Island, ~10 min by waterbus from Helsinki Market Square. Two wood-heated loft saunas (12 seats each). Soap, shampoo & seat cover included. Advance reservation essential (calendar opens each March). Sea swimming possible but wear water shoes due to rocky shore. Separate changing rooms plus gender-neutral option. Bar with full liquor license on the terrace.
Compiled from publicly available information and visitor reports. The rating shown is an editorial summary of the same, and does not mean we have visited every place in person. Prices and hours may change — please confirm with the venue before visiting.
Before you go
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Info updated: 2026-08
Details may differ from actual conditions.
What stands out
- +Island location off Helsinki coast
- +Hand-carved natural log construction
- +Two loft-style wood-burning saunas
- +Sea diving after sauna
- +Outdoor terrace overlooking archipelago
Facility Details
Wood-fired loft saunas on Lonna Island. 10 min by water bus from Market Square.
Sauna
2Special Facilities
1Sea swimming at rocky shore (water shoes needed)
Facility details are verified and updated regularly, but may differ from actual conditions. Please confirm with the venue before visiting.
10 min water bus from Helsinki Market Square to Lonna Island wood-fired sauna
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