Okawachi Onsen; Ino Yu
Shimonoseki, Yamaguchi, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Shimonoseki, Yamaguchi, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
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
Okawachi Onsen / Ino Yu, in Shimonoseki, Yamaguchi Prefecture, offers sodium-chloride water at 41°C. An indoor bath, an outdoor rotenburo, and a sauna are available on site.
Insider tip — Ino Yu, the wild boar spring, draws from the mountains behind Shimonoseki City where the Kanmon Strait separates Honshu from Kyushu in one of Asia busiest shipping corridors. The Battle of Dan-no-ura fought in these whirlpool-swept waters in 1185 ended the Genpei War, and today Shimonoseki is Japan undisputed capital of fugu blowfish cuisine — a city with more licensed fugu restaurants per capita than anywhere in the country.
Nearby
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.