Setouchi Onsen
- Location
- Setouchi, Okayama Prefecture, Japan, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Setouchi Onsen is located in Setouchi City, Okayama Prefecture, on the Seto Inland Sea coast of Okayama where the calm island-dotted waters of Japan's most scenic inland sea create an extraordinary maritime landscape of islands, fishing villages, and historic routes that have connected western and eastern Japan since ancient times. The siliceous thermal waters here serve a coastal community on the shores of the Seto Inland Sea, where the seafood culture of the Harima Sea (bivalves, sea bream, and octopus), the island scenery of the Okayama archipelago, and the gentle maritime climate create a distinctively pleasant coastal living environment. Bathing at Setouchi Onsen on the Inland Sea coast offers a relaxing mineral spring experience enhanced by the extraordinary maritime beauty of western Japan's most scenically celebrated body of water, where the combination of calm sea, island silhouettes, and siliceous thermal waters creates an atmosphere of quiet Mediterranean-like serenity.