Haraikawa Onsen

Uwajima, Ehime, Japan

Location: Uwajima, Ehime, 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

Haraikawa Onsen, in Uwajima, Ehime Prefecture, offers sodium-chloride water at 41°C, with an indoor bath, outdoor rotenburo and sauna.

Insider tip — Haraikawa Onsen serves Uwajima City, famous for two extraordinary cultural traditions: togyu bull sumo wrestling where bulls lock horns in the ring rather than fighting humans, a practice brought from the Netherlands in the 17th century; and the progressive Date Domain philosophy that sponsored Dutch-language Western medicine and natural science, making Uwajima a surprising Edo-period window onto European knowledge in the remote Seto Inland Sea.

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Nearby

Ipponmatsu Onsen Akeboneso

Ainan, Ehime

Tosa Shimanto Onsen

Shimanto, Kochi Prefecture, Shikoku

Yui Onsen

Susaki, Kochi

Mori no Kuni Poppo Onsen

Uwajima, Ehime

Uwajima Onsen Ehime Toshiue

Uwajima, Ehime, Shikoku

Sukumo Onsen Kochi

Sukumo, Kochi

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.