Koso Onsen Kiyoshi no Mori
Harima, Hyogo, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Harima, Hyogo, Japan
- Water type
- thermal, sodium chloride
- Temperature
- 39 °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
Kiyoshi no Mori, the bathhouse of Koso Onsen in Harima, Hyogo Prefecture, runs thermal sodium-chloride water at 39°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — 'Kiyoshi no Mori' (Kiyoshi's forest) at Koso Onsen is nestled in the wooded hills west of Kobe. A relaxed forest-spa environment for the communities between Kobe and the Harima plains. The forested setting provides a cool contrast to the surrounding urban sprawl.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 39 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features thermal & sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.