Highway Onsen Suwako (Nobori)
Suwa, Nagano, Japan
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- Location
- Suwa, Nagano, 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
Highway Onsen Suwako (Nobori), the counterpart facility by Lake Suwa, Nagano, delivers iron-rich water at 41°C, with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Highway Onsen Suwako sits conveniently along the Suwa Lake corridor in Nagano, making it a popular stop for travelers crossing the Chuo Expressway. The iron-rich waters have a reddish-brown tint and a distinctly metallic mineral character typical of this volcanic lakeside zone. The lakeside vistas from the upper baths are especially dramatic at dusk when Suwa-ko reflects the alpine glow. A good budget option for a quick thermal soak between destinations.
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).