Moiwa Onsen
Iwanai, Hokkaido, Japan
- Location
- Iwanai, Hokkaido, 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
Moiwa Onsen, in Iwanai, Hokkaido, relies on sulfurous water at 44°C, typical of the island's hot springs. Indoor bath, outdoor rotenburo and sauna are available there.
Insider tip — Moiwa Onsen emerges near the volcanic coastline of western Hokkaido in the Iwanai district, where sulfurous springs have been known since the Ainu inhabited these shores. The milky white water carries a distinct hydrogen sulfide aroma and is prized for treating skin conditions and respiratory complaints. Guests can combine a soak with panoramic views of the Sea of Japan, especially dramatic in winter when sea ice drifts along the coast. The small scale of the facility preserves an intimate, unhurried atmosphere rare in Hokkaido's better-known resort towns.
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).