Seaside sauna · 🇫🇮 Helsinki, Finland

Lonna Sauna

Log-built, wood-heated public sauna on the small island of Lonna, a short ferry ride from Market Square on the way to Suomenlinna. Both saunas are mixed with separate changing rooms, and the terrace bar looks out over the archipelago; it operates only in the summer season.

Sea swimmingWood-firedBarMixedTowel rentalBook ahead

Good to know

Men and women share the sauna – check the dress code on the venue's website.
Towels can be rented on site if you travel light.
Book ahead, especially for evenings and weekends.
Cool off with a swim between rounds.

Location

Lonna Island, Helsinki (ferry from Market Square)

Details checked against the venue's official information on 2026-09-30. Prices and hours change – please confirm on the official website before visiting. Sources: lonna.fi, lonna.fi.

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