Seiwa Onsen Ruonto
Hokkaido, Japan
- Location
- Hokkaido, Japan
- Water type
- sulfurous
- Temperature
- 44 °C
- pH
- 6.5
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.
SoufreSulfuresSulfates
Seiwa Onsen Ruonto is located on the island of Hokkaido, Japan. Its sulfurous thermal water reaches 44°C, pH 6.5. An indoor bath, an outdoor rotenburo bath and a sauna are available on site.
Insider tip — Seiwa Onsen Ruonto draws on Hokkaido's volcanic geology to deliver a classic sulfurous spring experience in the island's central highlands near Asahikawa. The pale greenish water has a characteristic eggy aroma and is prized for softening the skin and easing muscle fatigue. The surrounding landscape of dense Ezo spruce forest gives the baths a true wilderness atmosphere. Winter visits reveal frozen outdoor surfaces contrasting beautifully with the steaming pools.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 44 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sulfurous water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).