Kawatana Osaki Onsen; Shiosai no Yu
Kawatana, Nagasaki, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Kawatana, Nagasaki, Japan
- Water type
- thermal, sodium chloride
- 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
Kawatana Osaki Onsen, also called Shiosai no Yu, is located in Kawatana, Nagasaki Prefecture. The sodium-chloride water reaches 40°C. An indoor bath, an outdoor rotenburo bath and a sauna are available.
Insider tip — 'Shiosai no Yu' (潮騒の湯 — tidal roar spring) at Kawatana Osaki Onsen in Kawatana-cho, Nagasaki. Kawatana Onsen has been valued since the Edo period — samurai, merchants and pilgrims stopped here on the road between Nagasaki and Sasebo. 'Shiosai' (tidal roar) evokes the sound of the Yatsushiro Sea and Omura Bay tides just below the thermal spring valley. The sodium-chloride waters have a salt warmth prized for muscle relaxation.
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 thermal & sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.