Hamamasu Hoyo Center; Hamamasu Onsen
Ishikari, Hokkaido, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Ishikari, Hokkaido, Japan
- Water type
- sodium chloride
- Temperature
- 42 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
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
Hamamasu Hoyo Center (Hamamasu Onsen) is a hot spring facility in Ishikari, on the Sea of Japan coast of Hokkaido. The sodium-chloride water flows at 42°C, pH 7.3. An indoor bath, an outdoor rotenburo bath and a sauna are available.
Insider tip — Hamamasu Hoyo Centre serves the coastal Hamamasu district of Ishikari where the great Ishikari River empties its 268-kilometre journey from the Taisetsuzan mountains into the Sea of Japan. The saline spring draws from coastal marine strata and provides a warm welcome in a community shaped by salmon fishing and coastal forestry.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 42 °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.