Seinan Onsen Kaiun no Yu
Morioka, Iwate, Japan
- Location
- Morioka, Iwate, Japan
- Water type
- sodium chloride, thermal
- 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
Seinan Onsen Kaiun no Yu is located in Morioka, Iwate Prefecture, northern Japan. Its sodium-chloride thermal water reaches 41°C (106°F). An indoor bath, an outdoor rotenburo bath and a sauna are offered here.
Insider tip — Morioka is Iwate Prefecture's capital — a city of striking granite scenery where cherry trees bloom through a cracked boulder (the Ishiwari Zakura, a 360-year-old tree erupting through solid rock). Morioka is famous for three noodle cultures: wanko soba (rapid small-cup soba, with challengers eating 100+ bowls), cold jaja-men noodles, and morioka reimen (cold clear noodles in rich beef broth). 'Kaiun no Yu' (sea fortune bath) in this landlocked mountain city is an auspicious name for a sento serving Morioka's community.
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 & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.