Shimoyu-Onsen
Hakone, Kanagawa, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Hakone, Kanagawa, Japan
- Water type
- sulfurous
- Temperature
- 82 °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
Shimoyu-Onsen, in Hakone, Kanagawa Prefecture, draws sulfurous water emerging at a scalding 82°C (pH 6.5), among the hottest in the area. An indoor bath, an outdoor rotenburo and a sauna are available.
Insider tip — One of the lesser-known spots within the Hakone volcanic zone. The sulfurous waters, characteristic of the Owakudani geothermal system, flow at very high temperature — baths are diluted to comfortable levels. Perfect for day-trippers wanting a quieter Hakone experience.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 82 °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.