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Waisu Onsen

ワイス温泉ワイスおんせん

Lodging
Hokkaido·Hokkaido

Day Use

Yes
10:00–20:00

Weekdays 16:00-20:00; weekends & holidays 10:00-20:00 (last entry 19:30).

¥700

Bathing & Water

Natural onsen water

Uses natural hot spring water

Indoor BathYes

Enclosed indoor bathing area

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

DiningYes

Restaurant or dining open to visitors (not just hotel meal plans)

WashingYes

Shower, wash stations, soap and shampoo provided

市原2・3号の混合

Ichihara No. 2 / No. 3 (mixed)

Operated by · 株式会社 市原

Mixed source

Chloride
+ Sulfate
Color
colorless and clear
Taste
faintly salty
Odor
odorless

Sodium Chloride-Sulfate spring

pH 8.5Weakly alkalineHot source · 52°C
Composition fingerprint1.9 g/kg dissolved · Hypotonic
Na⁺88
Cl⁻72
SO₄²⁻23
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻
table-salt anion — coats the skin and holds heat in.
Known good for
  • Warmingcold sensitivity
  • Circulationtired legs
  • Aches & jointsstiff shoulders

A blended sodium chloride–sulfate spring drawing on the Ichihara No. 2 and No. 3 wells, served at a hot 51.7 °C. Weakly alkaline and soft on the skin, the chloride lead carries a quiet sulfate body — colourless and clear in the glass, with the faintest salty edge on the tongue. Sampled from the mixing tank in the bathhouse's mechanical room rather than at the wellhead, so what you bathe in is exactly what the cert measures.

Sampled at mixing tank·Analyzed Oct 30, 2017·一般財団法人 北海道薬剤師会公衆衛生検査センター·Cert no. 道薬検温第1126号

Explore the water

Programs

About

Waisu Onsen is a hot-spring facility in Rankoshi, Hokkaido in the ワイス温泉 hot-spring area, and a member of the Niseko Yumeguri Meijin (ニセコ湯めぐり名人) hot-spring stamp rally. Day-use bathing is available.

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Onsen Oni

Last updated June 19, 2026