Echizen Onsen Rotenburo; Nihonkai
Echizen, Fukui, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Echizen, Fukui, 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
Echizen Onsen Rotenburo; Nihonkai overlooks the Sea of Japan coast in Echizen, Fukui Prefecture. The sodium-chloride water flows at 41°C. The bathhouse features an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Nihonkai Rotenburo, the Japan Sea outdoor bath, offers open-air soaking directly above the cliffs of the Echizen coast where winter storms from the Korean Strait build waves that crash against the basalt headlands visible from the pools. The Sea of Japan that dominates the view is one of the world most nutrient-rich enclosed seas — its circulation patterns drive the upwelling that feeds the extraordinary fish abundance of the Hokuriku coast and generates the heavy snowfall that defines the cultural and architectural character of the entire Echizen-Kaga coastal belt.
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.