Minamitamiya, Tokushima City, Tokushima
Tokushima Natural Onsen Aratae-no-Yu (Tamiya)
A full-featured city spa for visitors who want a confirmed natural-spring bath, several other pools, saunas and a separate stone-spa area. Only the designated spring bath is confirmed as source-flowing without dilution; the other feature baths use separate systems.
Check before bathing
- Opening hours
- 08:00–01:00; on Fridays, Saturdays and nights before public holidays, open until 02:00. Last admission is one hour before closing. Closed on the second Wednesday of each month.
- Tattoo policy
- Tattoos, including tattoo stickers, are prohibited.
Spring & water temperature
- Spring-source temperature
- 29.4°C.
- Bathing temperature
- Not published by pool.
- Spring source
- Natural Aratae Beauty Spring, pumped from about 800 m underground.
- Spring classification
- Sodium-chloride and bicarbonate spring; high salinity, neutral pH and low-temperature spring.
- pH
- 7.4.
- Flow rate
- 97.4 L/min; pumped from a depth of 800 m.
- Water handling
- The designated natural-spring bath is used without added water and is heated. Carbonated, pot, electric, reclining, standing and medicinal baths are separate features and should not all be described as source-flowing.
29.4°C is the source temperature, not a fixed bathing temperature. The operator confirms that the designated spring bath is heated but not diluted. Rock-spa admission is charged separately.
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.
