Okaya Onsen Bihada no Yu; Romanette
Okaya, Nagano, Japan
- Location
- Okaya, Nagano, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Okaya Onsen Bihada no Yu, also known as Romanette, is located in Okaya, by Lake Suwa in Nagano prefecture. Its bicarbonate water emerges at 40°C with a pH of 8, alongside an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Bihada no Yu, the beautiful skin spring, lives up to its name with soft alkaline bicarbonate water from the Lake Suwa basin. Okaya was once the world silk-reeling capital, and the Silk Museum nearby tells the story of the young women from across Japan who worked the mills here in the Meiji era.
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 bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.