Uramigataki Onsen
Hachijōjima, Tokyo, Japan
- Location
- Hachijōjima, Tokyo, Japan
- Temperature
- 37 °C
- pH
- 6.5
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Uramigataki Onsen is located on Hachijōjima Island, part of the Tokyo archipelago. Its sulfurous, iron-rich water, at 37°C (pH 6.5), feeds an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Located on Hachijōjima island, 300 km south of Tokyo and reachable by overnight ferry or 55-minute flight. 'Uramigataki' means 'waterfall-behind view.' The island's volcanic geology produces striking amber, iron-rich waters with a subtle sulfurous character.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 37 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features sulfurous & iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.