Sujiyu Onsen Ashiyu
Kokonoe, Oita, Japan
- Location
- Kokonoe, Oita, Japan
- Temperature
- 50 °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
Sujiyu Onsen Ashiyu is located in Kokonoe, Oita Prefecture, a mountainous area threaded with hot springs. Sulfurous thermal water reaches 50°C here, shared between an indoor bath, an outdoor rotenburo, and a sauna.
Insider tip — Sujiyu (筋湯) is one of Japan's hottest and most mineralically intense spring areas — waters emerge at scalding temperatures and the traditional 'uchiyu' (打ち湯) technique of rapidly splashing the water to cool and aerate it is unique to Sujiyu. This ashiyu (foot bath) lets visitors safely experience the legendary waters. 'Sujiyu' means 'muscle water' — reflecting traditional belief in its extraordinary efficacy for musculoskeletal conditions. The surrounding Kokonoe Kuju volcanic highlands are a UNESCO Global Geopark.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 50 °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.