Spajam Numazu Shizuoka
- Location
- Numazu, Shizuoka, Japan
- Water type
- sodium chloride
- Temperature
- 45 °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.
Spajam Numazu Shizuoka is a modern spa and wellness facility located in Numazu, Shizuoka Prefecture, a port city at the head of Suruga Bay — Japan's deepest bay, plunging to over 2,500 metres and famous for its exceptional fishing grounds yielding aji horse mackerel, sakura shrimp, and cherry blossom coastal panoramas with Mount Fuji rising beyond the water. The bicarbonate and chloride thermal waters draw from the deep sedimentary geology of the Izu-Numazu coastal area, reflecting the complex geological character of the Izu Peninsula's approach zone where the Philippine Sea Plate's subduction generates intense geothermal activity. Numazu's position as the gateway to both the Izu Peninsula — Japan's premier warm-water coastal resort region — and the Fuji-Hakone-Izu National Park makes it an ideal wellness hub where bicarbonate-chloride mineral bathing can be combined with Mount Fuji views, coastal seafood, and access to some of Japan's most spectacular coastal and volcanic landscapes.