Hattyou Onsen
Osaka, Osaka Prefecture, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Osaka, Osaka Prefecture, Japan
- Water type
- sodium chloride
- Temperature
- 41 °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
Hattyou Onsen, in the city of Osaka, draws sodium-chloride water at 41°C. The bathhouse offers an indoor bath, an outdoor bath (rotenburo) and a sauna.
Insider tip — Hattyou Onsen (Hatchou Onsen) is an urban sento-style onsen in Osaka, providing residents with access to genuine geothermal water in the heart of Japan's liveliest metropolis. The sodium-chloride-rich water warms the body efficiently and is prized for keeping skin supple in the dry Kansai winters. Simple and unpretentious in the tradition of Osaka's neighbourhood bathhouses, it rewards regulars with consistent quality. Visiting early morning before the crowds is the local's secret for a meditative soak.
Nearby
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).