Shuzenji Onsen, Izu City, Shizuoka Prefecture
Hakoyu Public Bath
An easy add-on to a walk around Shuzenji, but a fairly simple soak: the current facility information does not advertise an outdoor bath, sauna or multiple pools.
Facility photos
Check before bathing
- Opening hours
- 10:00–21:00; last admission 20:30. Except in August, the second Thursday of each month opens from 15:00 for maintenance. Temporary delays or closures may occur.
- Access
- There is no dedicated parking. The bath fits best into a Shuzenji walking itinerary.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Shuzenji Onsen; the current official page does not name the individual source.
- Spring classification
- Alkaline simple hot spring.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- The bath reopened after renovation in November 2025. The current official page does not publish the water-treatment method, so older source-flowing claims are not carried forward.
Bathing indications
Izu City lists general indications for the spring; these are not a treatment guarantee.
The second-Thursday maintenance schedule differs in August. Check for temporary changes before visiting.
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.
