Utopia Shiratama Onsen
Osaka, Osaka, Japan
- Location
- Osaka, Osaka, Japan
- Water type
- iron-rich
- Temperature
- 41 °C
- pH
- 6.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Utopia Shiratama Onsen in Osaka draws iron-rich water with a slightly acidic pH of 6.3 and a temperature of 41°C (106°F). Indoor bath, outdoor rotenburo bath and sauna are available at this urban bathhouse in Osaka Prefecture.
Insider tip — Utopia Shiratama Onsen is a charming urban bath facility in western Osaka, known for its distinctive iron-rich water that colors the tubs a warm amber hue. The playful name and well-kept facilities attract a mix of young couples and older regulars seeking daily relaxation. The variety of pool temperatures — from tepid to near-scalding — lets bathers customize their soak. A cold plunge pool provides a bracing counterpoint to the hot mineral baths.
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 iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).