Shirahone Onsen, Matsumoto, Nagano Prefecture
Shirahone Public Open-Air Bath
The most direct low-cost way to try Shirahone's atmospheric valley-side open-air bath. For winter, cold weather or a full indoor bathing setup, consider Awanoyu instead.
Check before bathing
- Opening hours
- Weekdays 10:00–16:00; weekends and public holidays 09:00–17:00. Closed Thursdays. Usually closed from late November until around mid- to late April; check the seasonal reopening notice.
- Tattoo policy
- The current first-party information does not confirm a tattoo policy. Ask the bathhouse before visiting.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Natural spring water from Shirahone Onsen; the current main official page does not name the source used at this bath.
- Spring classification
- Natural hot spring; the current main pages do not publish a chemical classification that can be tied specifically to this bath.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- Shirahone Onsen and Matsumoto City explicitly describe the gender-separated outdoor baths as source-flowing. Water addition, heating, circulation and disinfection conditions are not published for each pool.
Bathing indications
Official pages preserve general bathing descriptions for Shirahone Onsen. Local stories and a single bathing visit are not treatment claims.
The baths are described as source-flowing; other treatment conditions are not published for each pool.
Admission is ¥700 for adults and ¥400 for elementary-school children and younger. Current official pages do not provide a complete price list for towels and bathing supplies, so bring what you need.
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.
