Sanwa Onsen
Amagasaki, Hyogo, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Amagasaki, Hyogo, 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
Sanwa Onsen is an urban hot spring located in Amagasaki, Hyogo prefecture, near Osaka. Its sodium-chloride water emerges at around 41°C. The site includes an indoor bath, an outdoor bath and a sauna.
Insider tip — A neighborhood institution in working-class Amagasaki, Sanwa Onsen (Three Harmonies Spring) has served steelworkers, dockworkers, and local families for generations; the unpretentious atmosphere and genuine local crowd offer the most authentic Kansai bath culture imaginable, well away from tourist areas.
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.