Otaru Onsen Ospa
Otaru, Hokkaido, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Otaru, Hokkaido, Japan
- Water type
- iron-rich
- Temperature
- 41 °C
- pH
- 6.3
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.
FerBicarbonatesManganèse
Otaru Onsen Ospa overlooks the historic port of Otaru, Hokkaido. Its iron-rich water flows at 41°C with a pH of 6.3, and the facility offers an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Otaru Onsen Ospa taps iron-rich waters in the port city of Otaru on Hokkaido, the same island known for its volcanism and robust hot spring culture. The reddish-brown mineral water is characteristic of iron-rich springs and leaves a pleasant warmth that lingers after bathing. Otaru itself is famous for its historic canal district and glassblowing shops, making this onsen a perfect end to a day of sightseeing. The proximity to Sapporo makes it an easy half-day excursion.
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 iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).