HiuchinoYu

Saijo natural hot spring where you can enjoy the Uchinuki cold plunge and the warm Netsu no Yu hot bath

Ehime Saijo City

Saijo Natural Hot Spring Hiuchi no Yu is a day-use hot spring facility in Saijo, Ehime. It features spacious dry saunas and a steam/mist sauna that will satisfy sauna enthusiasts. Its standout feature is a soft-feeling cold plunge bath that uses Saijo's acclaimed Uchinuki water, selected as one of Japan's Top 100 Famous Waters. Another major attraction is the ability to enjoy a cold-cold alternating bathing experience by combining the cold plunge with a source spring bath at about 22°C. The hot spring is a chloride-rich spring with strong moisturizing properties that warm you to the core.

Hot Spring & Bath Information

Saijo Natural Hot Spring

TypeNatural Hot Spring

A sodium chloride hot spring drawn from underground (low-tonicity, mildly alkaline). The spring contains salts similar to seawater; salt adheres to the skin and helps reduce sweat evaporation, giving the water strong moisturizing properties. It is also referred to as Netsu no Yu, and a key characteristic is that you stay warm to the core after bathing and are less likely to cool down. The raw source water is naturally brownish, but iron is removed so the water is provided colorless and clear. You can relax in the spacious main bath or in the open-air bath overlooking a Japanese garden.

Sauna

Sauna

90°C

Sauna TypeDry Sauna

Stove Typefar_infrared

Capacity20people

Men'sWomen's

A spacious dry sauna with a large gas far-infrared heater and a two-tiered seating layout. Sauna mats are laid out with ample spacing on the benches for comfortable seating. The room maintains a balanced level of humidity and relatively strong radiant heat, creating a setting where you can quickly work up quality sweat with air that is crisp yet gently moist. A TV lets you relax while you sauna, and this classic, reliable sauna has been loved by locals for many years.

Steam sauna / Mist sauna

0

Sauna TypeSteam Sauna

Capacity12people

Men'sWomen's

Located near the outdoor bathing area, this steam sauna may operate as a mist sauna depending on rotation between the men's and women's baths. The interior fills with dense steam to the point where visibility becomes white, and steam is supplied frequently so it never feels lukewarm. It provides gentle, moisturizing heat that benefits skin and hair while promoting perspiration, making it a good option for those who find very hot saunas uncomfortable.

Cold Bath

Cold plunge bath

18°C

Water QualityNatural Water (Groundwater, Spring, etc.)

Capacity5people

Men'sWomen's

A cold plunge bath luxuriously supplied with Saijo's Uchinuki water, selected as one of Japan's Top 100 Famous Waters. The water is cool yet exceptionally soft to the touch, giving a enveloping sensation that makes you want to stay in longer. In the outdoor area there is also a source spring cold plunge at around 22°C, allowing for cold-cold alternating bathing between the regular cold plunge and the source spring. Combined with bench or chair outdoor cooling, this creates a blissful relaxation experience.

Business Hours

Monday
10:00〜23:00
Tuesday
10:00〜23:00
Wednesday
10:00〜23:00
Thursday
10:00〜23:00
Friday
10:00〜23:00
Saturday
10:00〜23:00
Sunday
10:00〜23:00
Holiday
10:00〜23:00

Closed Days: None

Address

683 Funaya Ko, Saijo, Ehime 793-0004, Japan

Onsen & Spa Facilities (Super Sento, Sauna, Spa)

Gender Access

Gender Separated

Tattoo Policy
Unknown (Please Check)
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