Kawaguchiko Onsen Yamanashi
- Location
- Kawaguchiko, Fujikawaguchiko, Yamanashi, Japan
- Water type
- bicarbonate
- Temperature
- 39 °C
- pH
- 8
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Kawaguchiko Onsen is a celebrated thermal destination on the shores of Lake Kawaguchi in Fujikawaguchiko town, Yamanashi Prefecture, one of the Fuji Five Lakes at the northern base of Mount Fuji — the world's most perfectly conical stratovolcano and Japan's highest peak at 3,776 meters. The bicarbonate thermal waters provide gentle warmth and skin-softening benefits, while the lakeside setting with direct views of Mount Fuji reflected in the mirror-smooth lake surface on calm mornings creates one of Japan's most iconic and emotionally resonant landscapes. Kawaguchiko is among Japan's most visited onsen destinations for international tourists, drawn equally by the thermal bathing tradition and the extraordinary proximity to sacred Fuji-san.