Kai Shimin Onsen; Hyakurakusen
Kai, Yamanashi, Japan
- Location
- Kai, Yamanashi, Japan
- Water type
- 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
Kai Shimin Onsen, known as Hyakurakusen, is located in Kai, Yamanashi prefecture. The bicarbonate water, pH 8, emerges at 40°C, supplying an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Hyakurakusen, the spring of a hundred pleasures, is a civic onsen for Kai city residents, offering affordable access to the bicarbonate water of the Yumura district. The facility serves as the living room of a neighbourhood that looks up daily at Yatsugatake and the Mount Fuji profile visible to the southeast on clear mornings.
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 bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.