Hiraishi Wakamiya, Kawauchi-cho, Tokushima City, Tokushima
Aiai Sauna
A new sauna-focused facility that reopened in July 2026 after a major renovation. It replaced the former Aiai Onsen's natural-spring concept with herbal baths, so old reviews describing a natural spring no longer apply.
Check before bathing
- Opening hours
- Current industry listings checked September 4, 2026 show 08:00–23:00, last admission 22:00; closed Thursdays. Adult admission is ¥900 on weekdays and ¥1,100 on weekends and public holidays, with a ¥100 morning discount from 08:00 to 11:00. A temporary closure was reported after reopening; check the facility's social channels before travelling.
Spring & water temperature
- Spring-source temperature
- Not applicable.
- Bathing temperature
- Not published.
- Spring source
- No natural spring is confirmed for the reopened facility.
- Spring classification
- Herbal-bath and sauna facility; not listed as a natural hot spring.
- pH
- Not applicable.
- Flow rate
- Not applicable.
- Water handling
- Herbal baths and ordinary bathing facilities. The previous Aiai Onsen source information should not be carried over to the reopened business.
The former facility closed in 2022; the renovated Aiai Sauna reopened July 17, 2026.
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.
