Futaba Onsen
Ibaraki, Osaka, Japan
- Location
- Ibaraki, Osaka, Japan
- Water type
- iron-rich
- Temperature
- 38 °C
- pH
- 6.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Futaba Onsen, in Ibaraki (Osaka prefecture), heats iron-rich water to 38°C. The facility combines an indoor bath, an outdoor rotenburo bath, and a sauna on the outskirts of the Osaka area.
Insider tip — Futaba Onsen draws ferruginous water from the Osaka basin's deep aquifer, yielding a characteristically orange-tinted bath known for warming the body and improving circulation. Located in Ibaraki in northern Osaka prefecture, it functions as a community cornerstone where three generations of a neighborhood often bathe side by side. The iron content gives a faint metallic scent that experienced onsen visitors recognize as a mark of quality. The natural temperature is gentle, making it suitable for extended soaks by elderly guests.
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 iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).