A spectacular open-air bath with panoramic views of the Pacific Ocean, and a famous hot spring rising from 1,300 m underground
Ibaraki Hitachi City
"Ukuranoyu Juo" is a day-use hot spring facility in Hitachi City, Ibaraki Prefecture. Its biggest attraction is the open-air bath, where you can take in a sweeping panoramic view of the Pacific Ocean right in front of you. The sodium sulfate-chloride hot spring, rising from 1,300 m underground, is gentle on the skin and warms you from the inside out. The sauna rooms on two floors each offer a different atmosphere, with steady heat that feels pleasant. After cooling down in the refreshing cold bath, you can enjoy a blissful moment of total mind and body release during an outdoor air bath while feeling the sea breeze.
TypeNatural Hot Spring
A natural hot spring that rises from 1,300 m underground. The sodium sulfate-chloride spring quality provides excellent heat retention, so the warmth lasts long after you get out of the bath. Bathing in the open-air bath overlooking the Pacific Ocean is especially memorable, letting you enjoy a luxurious time while listening to the sound of the waves.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
Steady heat from a gas-powered convection stove fills the room, allowing you to work up a good sweat at your own pace. It is a space where you can quietly focus on your own condition in a calm atmosphere.
Water QualityTap Water
Capacity4people
A cold bath that refreshes and cools down your body after the sauna. Its moderate chill wraps around your whole body, quickly tightening both mind and body. The clean bath makes for a smooth cooldown.
Closed Days: Tuesday
605 Ishi, Juo-cho, Hitachi City, Ibaraki 319-1301
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more
A spectacular open-air bath with panoramic views of the Pacific Ocean, and a famous hot spring rising from 1,300 m underground
Ibaraki Hitachi City
"Ukuranoyu Juo" is a day-use hot spring facility in Hitachi City, Ibaraki Prefecture. Its biggest attraction is the open-air bath, where you can take in a sweeping panoramic view of the Pacific Ocean right in front of you. The sodium sulfate-chloride hot spring, rising from 1,300 m underground, is gentle on the skin and warms you from the inside out. The sauna rooms on two floors each offer a different atmosphere, with steady heat that feels pleasant. After cooling down in the refreshing cold bath, you can enjoy a blissful moment of total mind and body release during an outdoor air bath while feeling the sea breeze.
TypeNatural Hot Spring
A natural hot spring that rises from 1,300 m underground. The sodium sulfate-chloride spring quality provides excellent heat retention, so the warmth lasts long after you get out of the bath. Bathing in the open-air bath overlooking the Pacific Ocean is especially memorable, letting you enjoy a luxurious time while listening to the sound of the waves.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity8people
Steady heat from a gas-powered convection stove fills the room, allowing you to work up a good sweat at your own pace. It is a space where you can quietly focus on your own condition in a calm atmosphere.
Water QualityTap Water
Capacity4people
A cold bath that refreshes and cools down your body after the sauna. Its moderate chill wraps around your whole body, quickly tightening both mind and body. The clean bath makes for a smooth cooldown.
Closed Days: Tuesday
605 Ishi, Juo-cho, Hitachi City, Ibaraki 319-1301
Gender Access
Gender Separated
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more