Toyo Onsen; Iyashi no Resort
Saijō, Ehime, Japan
- Location
- Saijō, Ehime, Japan
- Water type
- sodium chloride
- Temperature
- 41 °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
Toyo Onsen, in Saijō, Ehime Prefecture, draws on sodium-chloride water at 41°C. The facility combines indoor baths with a rotenburo (outdoor bath) and a sauna, offering a classic Japanese onsen relaxation stop.
Insider tip — Iyashi no Resort, the healing resort, draws from Saijo mineral-rich ground beneath the Shikoku Mountains. Saijo sits at the foot of Ishizuchi-san, western Japan highest peak at 1982 metres, and the mountain trail from the cable car to the summit chains is among Japan most atmospheric ascents.
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 sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.