Katsura no Seki Onsen; Yumu
Sekikawa-mura, Niigata, Japan
- Location
- Sekikawa-mura, Niigata, 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
Katsura no Seki Onsen (Yumu) is located in Sekikawa village, Niigata Prefecture, Japan. Its sodium-chloride water, close to 41°C, supplies an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — In Sekikawa, the mountain village in Niigata's Iwafune highlands famous for the Sekikawa water-powered folk machinery and traditional gasoline mill culture, Yumu (an archaic word for hot spring) channels waters from the katsura tree forests above; the surrounding bamboo grass and ancient beech woodlands create a deeply Japanese mountain valley atmosphere.
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.