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Okushiri Onsen Hokkaido

Okushiri, Hokkaido, Japan
Okushiri Onsen Hokkaido
Location
Okushiri, Hokkaido, Japan
Water type
sodium chloride
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Effortless float
LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

Okushiri, a remote island 60 kilometres off the southwestern Hokkaido coast in the Sea of Japan, is known both for the devastating 1993 earthquake and tsunami that destroyed much of the island and for the remarkable community resilience and rebuilding effort that created a new model of disaster recovery in Japan, the island's extraordinary revitalisation earning international recognition as a model of community reconstruction. Okushiri Onsen Hokkaido draws on chloride-rich thermal waters from the geothermal resources of the volcanic geology beneath this remote Sea of Japan island, offering warming baths in the only significant community on the island where the memories of the 1993 disaster, the extraordinary rebuilding story, and the pristine Sea of Japan island scenery of rocky coves, kelp forests, and lighthouse-topped headlands create a profoundly moving and naturally beautiful spa setting. The 1993 Okushiri earthquake and tsunami reconstruction heritage, the pristine Okushiri Island coastal scenery accessible by ferry from Setana or Esashi, and the exceptional fresh sea urchin and abalone diving culture of this remote island make Okushiri one of Japan's most emotionally resonant and naturally isolated thermal spa destinations.

Insider tip — Okushiri Island sits isolated in the Sea of Japan, reachable by ferry from Setana, and its sodium-chloride springs at 40°C serve a small, tight-knit island community. The island gained recognition after a devastating 1993 earthquake and tsunami, and the onsen became a symbol of community recovery and resilience. Sea-facing baths offer panoramic views across the Japan Sea toward the Oshima Peninsula. The remoteness ensures an uncrowded, authentic bathing experience.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).