Senzu Onsen Gensen
Kawanehon, Shizuoka, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Kawanehon, Shizuoka, Japan
- Water type
- thermal, bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Senzu Onsen Gensen, in Kawanehon, Shizuoka Prefecture, taps alkaline (pH 8) thermal bicarbonate water at 40°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — 'Gensen' (source spring) at Senzu Onsen sits at Senzu Station on the famous Oigawa Railway, one of Japan's last steam train lines still carrying tourists through mountain valleys. The combination of a genuine source hot spring and a steam train ride on the Oigawa line is an unforgettable Shizuoka experience.
Nearby
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 thermal & bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.