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Hamana Onsen Hamamatsu

Hamamatsu, Shizuoka Prefecture, Japan
Hamana Onsen Hamamatsu
Location
Hamamatsu, Shizuoka Prefecture, Japan
Water type
sodium chloride
Temperature
41 °C
pH
7.3

Water profile

Thermicity
Sedative
41 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Effortless float
LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

Hamana Onsen Hamamatsu is a thermal bathing destination in Hamamatsu, Shizuoka Prefecture's largest city and a powerhouse of Japanese manufacturing and musical instrument culture — home to the headquarters of Yamaha, Kawai, and Roland — situated between Lake Hamana and the Pacific Ocean on Japan's tokai coast. The naturally chloride-sodium hot spring waters here are valued for their warming and circulation-stimulating properties, offering bathers an effective recovery soak in a city known more for motorcycles and pianos than for thermal springs. Accessible and welcoming, Hamana Onsen provides urban Hamamatsu residents and visitors with a genuine geothermal wellness experience complementing the city's extraordinary industrial, musical, and lacustrine cultural offerings.

Insider tip — Hamana Onsen taps into the brackish sodium-chloride aquifer beneath the coastal lowlands near Lake Hamana, the lagoon famous for eel farming and freshwater pearl cultivation. The salt-rich water warms the body quickly and has a detectable oceanic salinity that lingers on the skin. Urban sento facilities in this district often pipe the thermal water alongside Lake Hamana bay views, pairing hot-spring culture with fresh unagi cuisine.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).