Ouda, Uda, Nara
Akino-no-yu (Ouda Onsen)
A countryside spa for visitors already exploring Uda who want a well-documented alkaline spring and a choice of bathing areas. The 31.4°C source is heated and circulated, and the facility does not admit guests with tattoos, including tattoo stickers or body paint.
Check before bathing
- Tattoo policy
- Tattooed guests are not admitted, including those with tattoo stickers or body paint.
Spring & water temperature
- Spring-source temperature
- 31.4°C.
- Bathing temperature
- Not published by pool.
- Spring source
- Akino-no-yu spring, drawn from about 1,300 m underground.
- Spring classification
- Alkaline simple spring; low salinity, alkaline and low-temperature.
- pH
- 9.56.
- Flow rate
- 180 L/min.
- Water handling
- The operator says the source is not diluted with added water, but it is heated and circulated for temperature and hygiene management. Disinfection details are not itemized in the current main pages.
Do not describe the baths as untreated source-flowing water: the operator confirms heating and circulation.
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.
