Saito Tennen Onsen Sumire no Yu
Kishiwada, Osaka, Japan
- Location
- Kishiwada, 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
Saito Tennen Onsen Sumire no Yu is located in Kishiwada, Osaka Prefecture. The iron-rich water surfaces at 41°C, pH 6.3. On site: an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Sumire no Yu taps a deep urban aquifer beneath the city of Kishiwada, drawing iron-rich water that tints the tub a soft reddish-brown. The spring is a rare reminder that natural thermal energy exists even beneath the urban sprawl of greater Osaka. Regulars swear the mineral bath eases joint stiffness, and many stop in after visiting Kishiwada Castle nearby. Evening visits are popular with local families who fill the tatami lounges with lively conversation.
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).