Jiseiji Onsen; Sugino Yu
Ube, Yamaguchi, Japan
- Location
- Ube, Yamaguchi, 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
Jiseiji Onsen Sugino Yu, in Ube, Yamaguchi Prefecture, uses sodium-chloride water at 41°C. The bathhouse includes an indoor bath, rotenburo and sauna.
Insider tip — Sugino Yu, the cedar bath at Jiseiji Temple spring, combines Buddhist heritage with thermal wellness in the long tradition of temple bath culture that spread across western Honshu from the 8th century. Ube City's limestone quarries supply raw material for Japan's cement industry, and the karst geology underlying the mountains above creates the underground water circulation that feeds these mineral springs.
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.