Ryubi Onsen
Osaka, Osaka, Japan
- Location
- Osaka, Osaka, Japan
- Water type
- sodium chloride, thermal
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Ryubi Onsen, in downtown Osaka, heats sodium-chloride thermal water to 38°C (pH 7.3). An indoor bath, an outdoor rotenburo and a sauna are offered to bathers.
Insider tip — An urban hot spring sento in Osaka city, tapping deep artesian sodium-chloride waters. 'Ryubi' (dragon tail?) gives the bath a poetic name. Genuine natural hot spring water in the heart of Osaka — rarer than it seems, and valued by the neighbourhood regulars.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features sodium chloride & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.