Kawashiri Onsen; Hottoyuda
Nishiwaga, Iwate, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Nishiwaga, Iwate, 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
Kawashiri Onsen (Hottoyuda) is located in Nishiwaga, Iwate Prefecture, Japan. Its sodium-chloride thermal water reaches 40°C. The venue offers an indoor bath, an outdoor rotenburo bath and a sauna.
Insider tip — Nishiwaga in the Kitakami Mountains is one of Iwate's hidden onsen valleys — Kawashiri Onsen 'Hottoyuda' sits deep in the forested hills where waters flow year-round; ideal for multi-day hiking through untouched beech and cedar forest between natural soaks.
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.