Imaihama Onsen
- Location
- Minamiboso, Chiba Prefecture, 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.
Imaihama Onsen is a hot spring resort in the Kawazu area of Kamo County, Shizuoka Prefecture on the Izu Peninsula, situated along a scenic coastline that has earned the nickname Izu Maiko Beach for its beauty, with its iodine-rich waters piped in from the inland Mine Onsen spring to serve the beachside facilities. The Izu Peninsula, a volcanic landmass extending into the Pacific Ocean south of Tokyo, is one of Japan's premier hot spring destinations, and the Kawazu area in particular is famous for its early-blooming Kawazu cherry trees that attract millions of visitors each February. Imaihama Onsen forms part of the broader Kawazu Onsen resort cluster, where the combination of ocean views, volcanic thermal waters, and spectacular seasonal cherry blossoms creates one of the most appealing onsen tourism experiences in the entire Izu Peninsula.