Inagi Tennen Onsen Tokinoiro
Inagi, Tokyo, Japan
- Location
- Inagi, Tokyo, 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
Tokinoiro, in Inagi, western Tokyo, is fed by natural sodium-chloride water at 41°C. Indoor bath, outdoor rotenburo and sauna are all brought together here.
Insider tip — Tokinoiro, the spring of seasonal colors, serves Inagi City on the upper Tama River plain in the southwestern corner of Tokyo where three rivers join to create the floodplain wetland transformed into Inagi City Park. Inagi was historically the center of silk production on the Tama plateau — the Tama silk (Musashi-tsumugi) woven from cocoons raised in mulberry orchards that once covered the plateau was exported to Hachioji for weaving before the Meiji industrial transformation converted these plateau uplands to the suburban residential community visible today.
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.