Ubako Onsen; Shumeikan
Hakone, Kanagawa, Japan
- Location
- Hakone, Kanagawa, Japan
- Temperature
- 43 °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
Ubako Onsen (Shumeikan) sits in the hills of Hakone, Kanagawa Prefecture, part of the famed Fuji-Hakone thermal belt. Sulfurous water emerges at 43°C, filling an indoor pool and an open-air rotenburo overlooking the wooded valley. A sauna rounds out the facilities for a longer soak.
Insider tip — Ubako is a quiet enclave of Hakone between volcanic Owakudani (where eggs boiled black in sulfurous steam are said to extend your life by 7 years) and the serene shores of Lake Ashi. Shumeikan's milky-white sulfurous waters emerge from Hakone's ancient caldera — one of Japan's most geologically active zones and a UNESCO Global Geopark.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 43 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sulfurous & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.