Masuda Shimane Seaside Onsen
- Location
- Masuda, Shimane, Japan
- Water type
- sodium chloride
- Temperature
- 40 °C
- pH
- 7.3
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Dense, salty water — you float without effort.
Masuda Shimane Seaside Onsen occupies a coastal position in Masuda city, Shimane prefecture, where chloride-rich thermal waters offer Japan Sea views in a region deeply connected to the mythology and cultural heritage of Izumo — the birthplace of Japanese gods in Shinto cosmology. The onsen tradition here draws on the ancient belief that the San'in coast is among Japan's most spiritually potent landscapes, where the Izumo Taisha Grand Shrine receives the eight million gods of Japan each November for the divine assembly known as Kamiari-zuki. The combination of thermal bathing with the magnificent coastal scenery of the Iwami Silvermine historical district — a UNESCO World Heritage Site reflecting Japan's 16th-century dominance of global silver trade — gives Masuda's onsen a distinctive cultural positioning in western Japan.