Aizu Ashinomaki Onsen Okawaso
Aizuwakamatsu, Fukushima, Japan
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- Location
- Aizuwakamatsu, Fukushima, Japan
- Water type
- sulfurous
- Temperature
- 44 °C
- pH
- 6.5
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.
SoufreSulfuresSulfates
Aizu Ashinomaki Onsen Okawaso, in Aizuwakamatsu, Fukushima Prefecture, draws sulfurous water at 44°C. The bathhouse offers an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Aizu Ashinomaki Onsen Okawaso stands along the Tadami River gorge in western Fukushima, a region famous for its dramatic feudal scenery and volcanic springs. The sulfurous water emerges at 44°C, rich in hydrogen sulfide that soothes joint pain and brightens complexion. Tatami lounges overlook bamboo gardens where snow accumulates from November through March, creating a quintessential winter onsen atmosphere. Pair a soak with a visit to nearby Tsuruga Castle to fully absorb the samurai spirit of the Aizu domain.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 44 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sulfurous water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).