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Hachinohe Tanesashi Onsen

Hachinohe, Aomori Prefecture, Japan
Hachinohe Tanesashi Onsen
Location
Hachinohe, Aomori Prefecture, Japan
Water type
sodium chloride
Temperature
41 °C
pH
7.3

Water profile

Thermicity
Sedative
41 °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

Hachinohe Tanesashi Onsen is found in Hachinohe City on the Pacific coast of Aomori Prefecture, one of Tohoku's major fishing ports whose squid jigging fleet lights the night ocean in brilliant illumination each summer, and the gateway to the Tanesashi Coast, a designated scenic area of unusual beauty where natural coastal meadows of wild grass and wildflowers extend to the very edge of sea cliffs overlooking the Pacific, creating a landscape of pastoral gentleness set against oceanic drama that is unique along Japan's often dramatic northeastern coastline. The broader area encompasses the Michinoku Coastal Trail, a long-distance hiking route connecting Tanesashi with the spectacular rias coastlines of Iwate and Miyagi prefectures through some of Tohoku's most dramatic and least-visited Pacific scenery. The thermal spring waters here warm hikers, fishers, and coastal wanderers who come to experience Hachinohe's dual identity as an industrial fishing powerhouse and a gateway to one of northeastern Japan's most quietly beautiful and underappreciated natural coastlines.

Insider tip — Hachinohe Tanesashi Onsen draws on coastal salt-rich aquifers near the rugged Tanesashi coastline, where volcanic basement rock meets the Pacific. The sodium-chloride water at 41°C has strong warming properties — particularly valued after winter squid-fishing or sea-kayaking along the UNESCO Sanriku Geopark shores. The spring sits within easy reach of Hachinohe's vibrant morning market, Japan's largest outdoor market open since the Edo period. Combine an early market breakfast with a late-morning soak for the ultimate local experience.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 41 °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).