Yamato Tenmokuyama Onsen
Kōshū, Yamanashi, Japan
- Location
- Kōshū, Yamanashi, Japan
- Water type
- sodium chloride, thermal
- Temperature
- 40 °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
Yamato Tenmokuyama Onsen, in Kōshū, Yamanashi Prefecture, taps sodium-chloride thermal water at 40°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Tenmokuyama (天目山) in the Kofu Basin marks one of Japan's most poignant historical sites: the final stand of the Takeda clan in 1582, where Takeda Katsuyori and his family died at the valley of Tenmokuzan, ending the legacy of the great warlord Takeda Shingen. The surrounding Katsunuma wine district — Japan's Yamanashi wine country — produces the prized Koshu grape variety. Soaking here at the foot of a mountain of defeat and memory, surrounded by vine terraces, is a quintessentially layered Yamanashi 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 sodium chloride & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.