Kunnui Onsen
- Location
- Kunnui, Oshamambe, Hokkaido, Japan
- Water type
- sodium chloride
- Temperature
- 41 °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.
Kunnui Onsen is found in Mori, a coastal town on Uchiura Bay (also known as Volcano Bay) in southwestern Hokkaido, where the waters of the bay mirror the dramatic profile of Komagatake volcano rising from the peninsula to the south, its near-perfect cone reflected in the still waters of a bay renowned for its spectacular sunsets over the volcanic horizon. Mori is celebrated throughout Hokkaido for the quality of its scallop and seafood culture, and the local fishing harbor supplies restaurants across the region with freshly harvested shellfish from Uchiura Bay's productive waters. The onsen here draw on geothermal warmth from the Komagatake volcanic system, delivering mineral bathing with views over one of Hokkaido's most scenically dramatic bays in a town where volcanic landscape, maritime heritage, and hot spring culture converge in authentic rural harmony.