Shinshu Hiraya Onsen Himawari no Yu
信州平谷温泉 ひまわりの湯しんしゅうひらやおんせん ひまわりのゆ
Day Use
YesLast entry is 19:00, an hour before closing. It's normally open on public holidays that fall on a Wednesday (no makeup closure), though winter scheduling can vary a bit year to year. Once or twice a year, usually in early December, it closes for a day of equipment inspection on top of the regular Wednesday closure, making a two-day break. Hours run shorter on 31 December, with day-use reception ending around 18:00 and closing at 19:00.
Adult (junior high age and up) 900 yen, child (age 3 to elementary school) 500 yen. Age 65+ gets 100 yen off on Fridays with ID. Kids up to 6th grade bathe free on the 26th of each month (Furo no Hi, 風呂の日, "bath day"). Lockers take a 100 yen coin, returned after use.
Bathing & Water
Open-air outdoor bath
The outdoor bath is sometimes closed (fully or partly) in winter (roughly December to March) for freeze safety; the indoor bath and sauna stay open during those closures.
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Uses natural hot spring water
Capabilities
Shared bathing area for all genders
Baths are the normal gender-separated men's/women's layout; no mixed bathing is offered.
Policies & Services
Allows entry with visible tattoos
Welcomes children and families
Nagano-prefecture bathhouse rule posted on this facility's own news page: a child aged 7 or older may not enter the opposite-gender bath with a parent; only children up to age 6 may.
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Relaxation space for after bathing
On-site or nearby parking available
Highlights
Utaseyu
Steam Sauna
Lukewarm Bath
Jet BathPrograms
About
A small public onsen featuring an outdoor bath surrounded by a garden and an indoor bath. The setting is peaceful and natural, with a notable view of starry skies on clear winter nights from the open-air bath.
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Last updated July 14, 2026