Tsubame Onsen, Myoko, Niigata Prefecture
Kawara-no-Yu, Tsubame Onsen
A free, more rugged outdoor bath for visitors comfortable with mixed bathing and an uneven mountain trail. Choose Kogan-no-Yu for an easier first visit or in poor weather.
Check before bathing
- Opening hours
- Open from sunrise to sunset during the season. Closed for cleaning on Monday and Friday mornings. The 2026 season opened on 30 June; it usually closes through the winter, roughly November to June.
- Access
- About a 15-minute walk. The route includes rough ground and a temporary bridge; hiking or sturdy walking shoes are recommended.
- Tattoo policy
- The current official listing reviewed does not state a tattoo policy. Ask the local operator before visiting.
Spring & water temperature
- Spring-source temperature
- Not published for a source that can be directly matched to this bath.
- Bathing temperature
- Not published.
- Spring source
- Tsubame Onsen spring; the individual source name, spring number and sampling point are not confirmed in current information.
- Spring classification
- The current Niigata tourism listing describes Tsubame Onsen as a sulfur, bicarbonate and sulfate spring. Existing national environmental records give a more specific area classification, but they are not a current facility-specific analysis.
- pH
- Not published in the current listing.
- Flow rate
- Not published in the current listing.
- Water handling
- The Niigata Tourism Association describes Kawara-no-Yu as a free, source-flowing outdoor bath. Complete treatment details for water addition, heating and disinfection are not published.
Bathing indications
General bathing information for Tsubame Onsen is not a promise of treatment at this individual bath.
The bath is described as source-flowing; other treatment conditions are not published.
Free admission. This is a mixed-gender bath with a changing area. Allow for the rough trail and temporary bridge; winter access is closed.
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.
