Onoma Onsen
Onoma, Yakushima, Kagoshima, Japan
- Location
- Onoma, Yakushima, Kagoshima, Japan
- Water type
- sodium chloride, thermal
- 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
Onoma Onsen is located on Yakushima Island, Kagoshima Prefecture, in the hamlet of Onoma. Its sodium-chloride thermal water flows at around 40°C (pH 7.3), with an indoor bath, an outdoor rotenburo and a sauna.
Insider tip — Onoma Onsen on Yakushima island offers thermal bathing on one of Japan's most extraordinary landscapes — a UNESCO World Heritage island of ancient cedar wilderness where yakusugi trees over 7,200 years old stand in primeval forest. The island receives over 10,000mm of rainfall annually — Japan's wettest place — feeding rivers of emerald clarity. Yakushima's moss-carpeted forest floors inspired Hayao Miyazaki's Princess Mononoke. Bathing in a volcanic spring on a UNESCO island of living forest ancients is among the most spiritually resonant onsen experiences Japan offers.
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 sodium chloride & thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.