Suminoe Park, Suminoe Ward, Osaka
Natural Outdoor Hot Spring Spa Suminoe
A strong city option for a low-cost natural-spring bath, outdoor pools and loyly sauna, open until 02:00. It is not the pick for guaranteed quiet, private bathing or fully documented source-flowing pools.
Facility photos
Check before bathing
- Opening hours
- 10:00–02:00; last admission 01:00. Adults ¥800 on weekdays and ¥900 on weekends and public holidays; elementary-school children ¥400/¥450; preschool children ¥200/¥220. Normally open year-round, with occasional maintenance closures.
- Tattoo policy
- Guests with tattoos are not admitted.
Spring & water temperature
- Spring-source temperature
- 35.1°C at the source.
- Bathing temperature
- Not published.
- Spring source
- Natural spring from about 700 m underground.
- Spring classification
- Low-salinity, weakly alkaline hot spring; a more detailed statutory ion classification is not listed on the current main pages.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- Natural spring use is confirmed, but the current official pages do not fully describe treatment conditions for each pool.
Children who are not toilet-trained may not use the baths. The high-temperature loyly sauna is not for children.
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.
