Fukai Chuo Onsen
Sakai, Osaka, Japan
- Location
- Sakai, Osaka, Japan
- Water type
- thermal, sodium chloride
- 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
Fukai Chuo Onsen, in Sakai, Osaka Prefecture, provides thermal sodium-chloride water around 38°C. The venue includes an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — 'Fukai Chuo' (deep centre) Onsen is a public bath in Sakai, a proud independent-minded city south of Osaka known for its massive Nintoku-Tennō burial mound (UNESCO World Heritage). The neighbourhood sento culture here mirrors Sakai's identity as a place that does things its own way.
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 thermal & sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.