No. 26 · Nagano

Hirugami Onsen

Hirugami Onsen ranked No. 26 in the published 2025 Japan hot-spring destination list. Check bathing options, access and stay details before planning your visit.

Hirugami Onsen hot-spring destination
Hirugami Onsen, Nagano

Spring information

Water and bathing details for Hirugami Onsen

Facility-level figures; blank town-wide averages are not inferred.

Named facility records for Hirugami Onsen. Figures marked “Not published” are not treated as town-wide averages.

FacilitySpringSource dataSupplyBath type
Yuttarina HirugamiHirugami Onsen water. The regional tourism bureau classifies the area as an alkaline simple sulfur spring, but the facility's current main pages do not publish a matching, up-to-date analysis certificate. Source: Hirugami Onsen distribution system; the current main facility page does not identify a specific source well for this bathhouse.Source temperature: Not published for this facility. Hirugami's regional figure of 47.4°C is not assigned to its baths.
pH: Not published.
Current 2026 facility information lists indoor and open-air baths, a sauna, waterfall shower, reclining and sitting baths, and a swimming pool. Complete pool-by-pool details on water addition, heating, circulation, disinfection and source flow are not published, so no treatment method is inferred.Day-use bath. A dependable first stop in Hirugami if you need the longest opening window, family swimming, a sauna or an assisted/family bath. For a quieter feel or more rural scenery, look at Achi-no-Sato or Hirugami-no-Mori.
Hirugami-no-Mori Hotel Day-Use BathAlkaline simple spring, according to the facility's current description. Source: Hirugami Onsen; an individual spring-well name is not published.Source temperature: Not published.
pH: Not published.
The facility confirms Hirugami Onsen water in its large bath and open-air bath. Water addition, heating, circulation, disinfection and source-flow conditions are not published pool by pool.Day-use bath. Best for an afternoon arrival when an elevated open-air bath and seasonal views matter most. It is not the best fit for an early soak, a low budget, guests with tattoos or anyone relying on a fixed weekly closing day.
Achi-no-Sato Hirugami Day-Use BathAlkaline simple sulfur spring, according to the facility's current description. Source: Hirugami Onsen; an individual spring-well name is not published.Source temperature: Not published.
pH: Not published.
The facility explicitly says its natural spring water is used without adding water. It offers indoor, open-air and herbal baths. Heating, circulation, disinfection and the source-flow conditions of each individual pool are not fully published.Day-use bath. A strong choice if you prefer a smaller bathhouse, a quiet green setting, basic amenities and accessibility information. Check the last admission time for an evening visit and seasonal notices before relying on the outdoor baths.

Destination comparison

What this onsen town offers

Popularity

84/100

History

66/100

Spring character

89/100

Town culture

80/100

Seasonal scenery

96/100

Access

58/100

Local history

How the town developed

Four seasons

Seasonal conditions and travel rhythm

SpringMar–May
Daytime range: 2–19°C
SummerJun–Aug
Daytime range: 20–30°C
AutumnSep–Nov
Daytime range: 7–23°C
WinterDec–Feb
Daytime range: -5–7°C

Plan your stay

Hirugami Onsen: day trip or overnight?

Compare travel time, bath access and the time you want to spend in town.

Nearby destinations

Other places in the same prefecture in the published ranking.

Related guides

Guides to Hirugami Onsen

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Official sources

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