Miyaen Onsen
Yamaga, Kumamoto, Japan
- Location
- Yamaga, Kumamoto, Japan
- Water type
- thermal, sodium chloride
- Temperature
- 40 °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
Miyaen Onsen is located in Yamaga, Kumamoto Prefecture. The thermal, sodium-chloride water flows at 40°C, pH 7.3. The site offers an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — 'Miyaen Onsen' (宮苑温泉 — shrine garden spring) in Yamaga city. The shrine garden evokes the landscaped sacred spaces around Yamaga's old shrines — where formal garden design, teahouse culture, and thermal bathing form a unified aesthetic of Japanese refined living. Yamaga's alkaline sodium-chloride spring waters are celebrated for their skin-conditioning 'bijin no yu' (beauty spring) quality, emerging unusually clear and smooth from the Kikuchi volcanic aquifer. The shrine garden setting adds contemplative depth to the bath experience.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
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.