Ontake Onsen
Nagoya, Aichi, Japan
- Location
- Nagoya, Aichi, Japan
- Water type
- sodium chloride, thermal
- 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
Ontake Onsen is located in Nagoya, Aichi Prefecture. Its thermal sodium-chloride water reaches 40°C, complemented by an indoor bath, outdoor rotenburo and sauna.
Insider tip — Ontake Onsen's name evokes Mt. Ontake (御嶽山) — the sacred Kiso volcano that erupted without warning in September 2014, killing 63 hikers on a clear autumn day (Japan's worst volcanic disaster since WWII). The mountain has since reopened and remains a place of pilgrimage and remembrance. This Nagoya sento honors its name with thermal mineral waters in Nagoya's southern residential quarter.
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 sodium chloride & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.