Rantasauna
Helsinki, Finland
About
A seaside sauna building in the grounds of Hotel Rantapuisto in Vuosaari, with room for fourteen, an electric stove and a terrace looking out over the archipelago. Steps lead down to a jetty for a dip in the sea, though there is no ice hole in winter. Weekend shifts are ticketed, and groups can hire it.
Good to know
- Right on the sea: expect saltwater dips between rounds, cold even in summer.
- Electric stove: quicker to bring up to temperature, easier to control, and what most urban bathhouses run.
Hours
- Sat 07:30-12:00
- Sun 07:30-12:00, 16:30-19:30
Public shifts only, booked in advance in 90-minute slots. Before 10:30 the shifts are single-sex: Sat women then men, Sun men then women. Private hire at other times.
Common questions
Do I need to book Rantasauna?
Yes. Sessions are booked in advance, usually as a timed slot. The whole sauna can also be hired privately.
How much does Rantasauna cost?
Sessions are typically under €25 a person.
Does Rantasauna have a cold plunge?
Cold dips happen in open water beside the sauna.
When is Rantasauna open?
Typical hours are Sat 07:30-12:00; Sun 07:30-12:00, 16:30-19:30. Public shifts only, booked in advance in 90-minute slots. Before 10:30 the shifts are single-sex: Sat women then men, Sun men then women. Private hire at other times..


