Hadano Onsen Kanagawa
- Location
- Hadano, Japan
- Water type
- bicarbonate
- Temperature
- 41 °C
- pH
- 9.2
Water profile
Relaxing — deep, immediate muscle release.
Loaded with major ions — the essential minerals (Ca, Mg).
Soft water — natural, classic buoyancy.
Hadano Onsen is a mountain-influenced hot spring in Hadano city, situated in the Tanzawa highland area of Kanagawa Prefecture at the foot of the Tanzawa Mountains, which rise dramatically above the city to form the highest peaks in the Kanagawa hinterland. The bicarbonate thermal waters are soothing and alkaline, providing skin-softening and anti-inflammatory benefits that complement the active hiking culture of the surrounding Tanzawa-Oyama Quasi-National Park — a beloved day-hiking destination for Tokyo and Yokohama residents. The Tsurumaki Onsen area within the city, one of Kanagawa's oldest hot spring resorts, carries a history of therapeutic bathing stretching back centuries in the foothills of the Tanzawa range.