Tennen Onsen Kinu no Yu
Jōsō, Ibaraki, Japan
- Location
- Jōsō, Ibaraki, 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
Tennen Onsen Kinu no Yu is located in Jōsō, Ibaraki prefecture, near the Kinu River. Its sodium-chloride water emerges at 41°C with a pH of 7.3, alongside an indoor bath, a rotenburo and a sauna.
Insider tip — Kinu no Yu, the silk spring, takes its name from the Kinu River (Kinugawa) that flows past Joso, a city shaped by centuries of river transport between Tokyo and the Ibaraki hinterland. The soft saline water has a silken quality prized by locals for its effect on the skin.
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.