Kusamakura Onsen; Tensui
Kusamakura, Kumamoto, Japan
- Location
- Kusamakura, Kumamoto, Japan
- Water type
- iron-rich
- Temperature
- 41 °C
- pH
- 6.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Kusamakura Onsen (Tensui) is a hot spring in the Kusamakura area of Kumamoto Prefecture, Japan. Its iron-rich water runs hot, around 41°C. Bathers can use an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Kusamakura Onsen Tensui draws from a deep iron-rich vein in the Kumamoto volcanic belt, the waters arriving a warm rust-tinted amber. The bathhouse name Tensui means natural water, underscoring the pride taken in unfiltered spring flow. Bathing in iron-saturated water here is thought to stimulate red blood cell production and warm the extremities deeply. The surrounding countryside offers quiet cycling routes to fill the afternoon before your soak.
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 iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).