Kowa Onsen
Hamada, Shimane, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Hamada, Shimane, Japan
- Water type
- sodium chloride, thermal
- Temperature
- 40 °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
Kowa Onsen is set in Hamada, Shimane Prefecture, on the coast of the Sea of Japan. Sodium-chloride thermal water flows at 40°C, shared between an indoor bath, an outdoor rotenburo, and a sauna.
Insider tip — Hamada is a key city on the San'in coast — a rugged Sea of Japan coastline of dramatic sea caves, basalt pillars, and ancient fishing traditions within the San'in Kinki Geopark. Shimane Prefecture is home to Izumo Taisha — Japan's oldest and most sacred Shinto shrine, dedicated to Okuninushi-no-Mikoto (god of relationships and en-musubi, the binding of fates); Kowa Onsen serves a city that stands at the gateway to this deeply traditional western Honshu region.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 40 °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.