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Rokkasho Onsen Aomori

Rokkasho, Aomori, Japan
Rokkasho Onsen Aomori
Location
Rokkasho, Aomori, 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

Rokkasho, in the northeastern Aomori Prefecture on the Shimokita Peninsula approaches facing the Pacific Ocean, is home to Japan's controversial nuclear fuel reprocessing facility — the largest nuclear reprocessing plant outside of France and the UK — which has made this remote Aomori farming and fishing community the centre of Japan's most significant nuclear energy policy debates since construction began in the 1980s. Rokkasho Onsen Aomori draws on chloride-rich thermal waters from the geological resources of the eastern Aomori coastal plain, offering warm restorative baths in a community whose extraordinary nuclear energy policy significance, traditional Aomori farming culture, and the remote Pacific coast scenery of the Mutsu Bay approaches create an unusually layered and thought-provoking spa setting in northeastern Aomori. The Rokkasho nuclear fuel cycle facility and its policy significance, the traditional Aomori agricultural landscape of nagaimo yam and garlic cultivation, and the Pacific coastal scenery of the Rokkasho cape overlooking the outer approaches to Mutsu Bay create a complex and historically significant spa destination in the northeastern Aomori coastal zone.

Insider tip — Rokkasho occupies a wind-swept peninsula on Aomori's Pacific coast, where sodium-chloride waters at 40°C provide relief from the biting Tohoku winters. The town is known industrially for nuclear fuel reprocessing facilities, making the traditional onsen a welcome counterpoint to its industrial identity. Bathers arrive from across the Shimokita Peninsula seeking the warm saline waters. The sparse landscape of coastal moors and lagoons gives Rokkasho a raw, end-of-the-world quality unique in Japan.
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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).