Ukusauna
Sasebo, Japan
About
Ukusauna sits above the coast on Ukujima island, the northernmost of the Goto islands off Sasebo. Its hinoki cabin is heated by a pair of wood-fired stoves with self-service löyly, and the cold plunge draws on the island's own groundwater. An outdoor rest deck looks straight out over the water.
Good to know
- Wood-fired heat: softer, heavier löyly than electric, and the smell of the stove is part of the room.
- Cold plunge available on site: use it between rounds for the classic contrast cycle.
- Set in nature, away from the city, so bring a car or plan the transfer in advance.
- Right on the sea: expect saltwater dips between rounds, cold even in summer.
- Set up outdoors: weather is part of the experience, so dress for the walk between cabin and water.
Hours
- Mon-Fri 17:00-21:00
- Sat-Sun 14:00-21:00
- Wed closed
Hours have changed seasonally before (a 2025 notice announced a schedule change); confirm before publishing if this data ages.
Common questions
Do I need to book Ukusauna?
No. You can turn up during opening hours without booking.
How much does Ukusauna cost?
Sessions are typically ¥25–50 a person.
Does Ukusauna have a cold plunge?
Yes. There is a cold plunge on site for contrast rounds.
When is Ukusauna open?
Typical hours are Mon-Fri 17:00-21:00; Sat-Sun 14:00-21:00; Wed closed. Hours have changed seasonally before (a 2025 notice announced a schedule change); confirm before publishing if this data ages..
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