No. 54 · Nagano
Bessho Onsen
Bessho Onsen ranked No. 54 in the published 2025 Japan hot-spring destination list. Check bathing options, access and stay details before planning your visit.
Spring information
Water and bathing details for Bessho Onsen
Facility-level figures; blank town-wide averages are not inferred.
Named facility records for Bessho Onsen. Figures marked “Not published” are not treated as town-wide averages.
| Facility | Spring | Source data | Supply | Bath type |
|---|---|---|---|---|
| Daishi-yu Public Bath | Simple sulfur spring. Source: Bessho Onsen No. 3 spring. | Source temperature: About 44.6°C for No. 3 spring. pH: Not published. | Current Bessho Onsen property-district information says No. 3 supplies Daishi-yu and identifies the bath as fully source-flowing. A fixed bathing-pool temperature is not published, so the source temperature is not used in its place. | Day-use bath. The best fit of Bessho's three public baths if you want fully source-flowing water and an early 06:00 start. Choose Oyu or Aisome-no-yu for an outdoor bath or larger relaxation facilities. |
| Ishi-yu Public Bath | Simple sulfur spring. Source: Bessho Onsen No. 4 spring. | Source temperature: About 50.6°C for No. 4 spring. pH: No. 4 spring analysis from 2014: pH 8.7 at the emergence point and 8.92 in the laboratory. | No. 4 supplies Ishi-yu. The property district describes the bath as source-flowing with circulation filtration, so it should not be simplified to fully untreated source flow. | Day-use bath. A natural-rock bathing space with a strong connection to Sanada history and the old hot-spring town. For fully source-flowing water, Daishi-yu is the clearer choice. |
| Oyu Public Bath | Simple sulfur-spring system; a separate analysis for the mixed water is not published. Source: Bessho Onsen No. 4 spring and the Oyu spring. | Source temperature: About 50.6°C for No. 4 and 38.0°C for the naturally emerging Oyu spring. pH: No. 4 spring's 2014 analysis lists pH 8.7 at the emergence point and 8.92 in the laboratory. The Oyu spring and mixed bath pH are not published; the No. 4 figure does not represent the entire bath. | Current property-district information says Oyu uses both No. 4 spring and the naturally emerging Oyu spring. The bath is described as source-flowing with circulation filtration. | Day-use bath. The most balanced first stop if you only have time for one Bessho public bath: modest admission, an outdoor bath, historic atmosphere and two springs. Daishi-yu is the more direct pick for fully source-flowing water. |
Destination comparison
What this onsen town offers
History
68/100Spring character
78/100Town culture
69/100Seasonal scenery
70/100Access
65/100Local history
How the town developed
Four seasons
Seasonal conditions and travel rhythm
Plan your stay
Bessho Onsen: day trip or overnight?
Compare travel time, bath access and the time you want to spend in town.
Day trip
Check the first and last transport connections, then confirm which baths accept day visitors and when they stop admitting guests.
One-night stay
Compare the ryokan’s bath access with public day-use options and the journey back to your next stop.
Stay plus a day bath
Choose one bath experience for your stay and use a day facility for a different source or setting, where the published details support it.
Bessho Onsen Day Trip: Three Public Baths and Aisome no Yu ComparedNearby destinations
Other places in the same prefecture in the published ranking.
Related guides
Guides to Bessho Onsen
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ComparisonsBessho Onsen Day Trip: Three Public Baths and Aisome no Yu Compared
Compare Bessho’s three ¥300 town baths with station-side Aisome no Yu at ¥650. Hours, closing days and spring-water treatment vary by bath.
Read the guideOfficial sources
