Kuwadayama Onsen
Susaki, Kochi, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Susaki, Kochi, Japan
- Water type
- thermal, sodium chloride
- Temperature
- 39 °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
Kuwadayama Onsen is a hot spring in Susaki, Kochi Prefecture, Japan. Its sodium-chloride thermal water reaches around 39°C. The baths include an indoor area, an outdoor rotenburo bath and a sauna.
Insider tip — Kuwadayama (mulberry mountain) Onsen in Susaki, Kochi — gateway to the Niyodo River, often cited as Japan's most transparent river. Susaki is also famous for the last confirmed sighting of the Japanese river otter (1979). A hot spring with a poignant natural history backdrop in one of Shikoku's most scenic river valleys.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 39 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features thermal & sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.