Sumoto Onsen Shiosai no Yu Ashiyu
Sumoto, Hyogo, Japan
- Location
- Sumoto, Hyogo, Japan
- Water type
- sodium chloride, thermal
- Temperature
- 39 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Shiosai no Yu, in Sumoto on Awaji Island, Hyogo Prefecture, takes its name from the sound of the waves and heats sodium-chloride thermal water to 39°C. An indoor bath, outdoor rotenburo and sauna are available.
Insider tip — 'Shiosai no Yu' (sound-of-waves waters) is a public foot bath (ashiyu) in Sumoto, the main city of Awaji Island, Hyogo. Awaji bridges Osaka Bay and the Seto Inland Sea — a place of extraordinary food culture (black Awaji beef, sea bream, onions). The seaside foot bath captures the maritime essence of the island.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 39 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.