Kubote Onsen
Usa, Oita Prefecture, Japan
- Location
- Usa, Oita Prefecture, Japan
- Water type
- calcium-rich
- Temperature
- 42 °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
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
CalciumSulfatesMagnésium
Kubote Onsen is a sulfated hot spring in Japan, its mineral-rich waters carrying the characteristic smooth texture that has made sulfate springs a cornerstone of Japanese thermal bathing since ancient times. Calcium and magnesium sulfates present in the water give it a soft, skin-conditioning quality recognized in traditional Japanese balneology and traditionally associated with relaxation and bodily comfort. This quietly situated spring offers bathers the restful character of sulfate minerals within the unhurried pace of a rural Japanese onsen community.
Insider tip — Kubote Onsen draws calcium-sulfate waters from the geologically rich Oita basin near Usa, home to the ancient Usa Jingu Shinto shrine. The mineralized water has a soft opacity and leaves a pleasant warmth in the skin long after bathing, characteristic of the Oita spring tradition. The Usa basin landscape of paddy fields and distant mountains provides a classically Japanese rural backdrop. Nearby Usa Jingu, one of Japan's most important Hachimangu shrines, is a natural cultural complement to a day at the baths.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 42 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features calcium-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).