Tennen Onsen: Kowa no Yu
Osaka, Kansai Region, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Osaka, Kansai Region, 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
Tennen Onsen: Kowa no Yu is located in Osaka, in Japan's Kansai region, right in the heart of the city. Its sodium-chloride water warms to around 41°C, with an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Tennen Onsen Kowa no Yu taps genuine natural thermal water beneath the dense urban fabric of Osaka, a rarity in one of Japan's busiest metropolitan areas. The sodium-chloride composition provides the warming, skin-conditioning soak beloved by city dwellers seeking relief after long workdays. Multiple bath types — including jet baths and sauna — complement the natural spring pools. Its central location makes it an accessible urban escape without leaving the city grid.
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).