Tennen Onsen Therme Ryugu
Namba, Osaka, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Namba, Osaka, 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 Therme Ryugu is in the Namba district of Osaka. The sodium-chloride water reaches 41°C, pH 7.3. Amenities include a covered bath, an outdoor rotenburo and a sauna.
Insider tip — Therme Ryugu is a large urban sento in the heart of Osaka that pumps genuinely natural sodium-chloride spring water from deep underground. The imposing interior channels a fanciful undersea theme, yet the baths themselves deliver authentic mineral benefits that keep neighbourhood regulars coming back nightly. The salt-rich water warms the body efficiently, making it a favourite stop after a long day exploring Dotonbori. Multiple bath zones including jet pools and sauna complete the experience.
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).