Minatoharu, Minato Ward, Osaka
Natural Hot Spring Terume Ryugu
A useful low-cost bath near Osaka Port and Asashiobashi if you want a genuine natural spring and a source-flowing open-air bath at public-bath prices.
Check before bathing
- Opening hours
- Weekdays and public holidays 15:00–23:00; Sundays 08:00–23:00. Closed Thursdays.
- Access
- About a 10-minute walk from Asashiobashi Station, or about 2 minutes from the Minatoharu bus stop.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- The facility's own spring, drawn from 1,500 m underground.
- Spring classification
- Natural hot spring; the current Osaka bath association listing does not publish a detailed therapeutic-spring classification.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- Natural spring water from 1,500 m underground is supplied to the open-air bath on a source-flowing basis, with some spring water also entering the indoor baths. Do not describe every bath as source-flowing.
Bathing indications
The current listing confirms natural spring water but does not publish a complete analysis sheet or spring-specific indications. No medical benefit is inferred.
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.
