Oga Onsenkyo, Oga, Akita Prefecture
Oga Hotel
Best suited to a seasonal visit for its large garden-style outdoor rock bath. Day use may be unavailable during private bookings or busy periods, and getting around Oga is easier with a car.
Check before bathing
- Opening hours
- Day-use acceptance can change with hotel bookings and crowding; call before travelling. The hotel operates seasonally, and winter closure information should be checked before a late-autumn or winter visit.
- Access
- A car is the practical option for reaching Oga Onsenkyo; verify public transport for your travel date.
Spring & water temperature
- Spring-source temperature
- 55.4°C; this is the source temperature, not the bath temperature.
- Bathing temperature
- No fixed temperature is published.
- Spring source
- Oga Onsen No. 1.
- Spring classification
- Sodium chloride spring.
- pH
- 7.4.
- Flow rate
- Not published.
- Water handling
- The hotel describes the spring as source-flowing, with minimal seasonal water addition and heating, no circulation, no bath additives and chlorine-based sanitation.
Bathing indications
The hotel lists general bathing indications; these are not a treatment guarantee.
The hotel is seasonal, and day-use entry may stop for private bookings or crowding. Confirm both opening status and same-day bathing before travelling.
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.
