Uchinomaki Onsen, Aso, Kumamoto
Natural Hot Spring Daiaso
A simple, inexpensive town bath that opens early and sits close to the center of Uchinomaki. It is useful for a quick morning soak, but current official pages do not publish an individual spring analysis or detailed treatment information. The listed opening times differ by 30 minutes.
Check before bathing
- Opening hours
- The inn association lists 07:00–21:00; Aso City's page lists 07:30–21:00. Adult admission ¥300 and child admission ¥100. Confirm if arriving between 07:00 and 07:30.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Not published.
- Spring classification
- Listed as a natural hot spring; a facility-specific spring classification is not published.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- The inn association lists Daiaso as a town bath and lodging using natural hot spring water. Facility-specific supply and treatment details are not published.
Current association and city pages differ on the morning opening time.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
