The amber-colored, richly concentrated source spring "hot spring of warmth" and luxurious free-flowing underground natural water
Shizuoka Fukuroi City
"Fukuroi Onsen Wanoyu" (Yawaragino Yu) is a day-use hot spring facility in Fukuroi City, Shizuoka Prefecture, proud of its 100% private natural spring water. The amber-colored sodium chloride spring gushing up from 1,500 m underground is also known as the "hot spring of warmth" and is characterized by its exceptionally strong heat-retention and moisturizing effects. The sauna area features a powerful far-infrared sauna kept at 90 to 95°C. And above all, its pride and joy is the cold plunge bath, which uses underground natural water generously in a free-flowing style. The pure water, kept at around 19°C year-round, offers the remarkably soft touch that only natural water can provide, and the alternation of hot and cold bathing with the rich hot spring water leads you to an ultimate sense of release.
TypeNatural Hot Spring
A sodium chloride spring. This 100% source spring, with its beautiful amber color, is known as the "hot spring of warmth" because of its extremely high heat-retention effect from the salt content. It is also rich in metasilicic acid, a skin-beautifying component, so the moist feeling of your skin after bathing lasts a long time. In the open-air rock bath overlooking the Japanese garden, you can fully enjoy the bounty of the earth.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A full-fledged dry sauna that delivers heat deep into the body with far-infrared heaters. Men’s settings exceed 95°C, and women’s settings exceed 90°C, with stable and powerful heat that encourages a refreshing sweat. You can quietly refresh yourself in the room, surrounded by the warmth of wood.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity4people
A cold plunge bath that uses natural water pumped up from underground on the grounds, generously in a free-flowing style. It is characterized by a pleasant water temperature and the smooth quality of natural water. It gently envelops your heated body, letting you cool down slowly while the hot spring minerals sink into your skin.
Closed Days: None
〒437-1121 2022-3 Moroi, Fukuroi City, Shizuoka Prefecture
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
The amber-colored, richly concentrated source spring "hot spring of warmth" and luxurious free-flowing underground natural water
Shizuoka Fukuroi City
"Fukuroi Onsen Wanoyu" (Yawaragino Yu) is a day-use hot spring facility in Fukuroi City, Shizuoka Prefecture, proud of its 100% private natural spring water. The amber-colored sodium chloride spring gushing up from 1,500 m underground is also known as the "hot spring of warmth" and is characterized by its exceptionally strong heat-retention and moisturizing effects. The sauna area features a powerful far-infrared sauna kept at 90 to 95°C. And above all, its pride and joy is the cold plunge bath, which uses underground natural water generously in a free-flowing style. The pure water, kept at around 19°C year-round, offers the remarkably soft touch that only natural water can provide, and the alternation of hot and cold bathing with the rich hot spring water leads you to an ultimate sense of release.
TypeNatural Hot Spring
A sodium chloride spring. This 100% source spring, with its beautiful amber color, is known as the "hot spring of warmth" because of its extremely high heat-retention effect from the salt content. It is also rich in metasilicic acid, a skin-beautifying component, so the moist feeling of your skin after bathing lasts a long time. In the open-air rock bath overlooking the Japanese garden, you can fully enjoy the bounty of the earth.
Sauna TypeDry Sauna
Stove TypeInfrared Heater
Capacity15people
A full-fledged dry sauna that delivers heat deep into the body with far-infrared heaters. Men’s settings exceed 95°C, and women’s settings exceed 90°C, with stable and powerful heat that encourages a refreshing sweat. You can quietly refresh yourself in the room, surrounded by the warmth of wood.
Water QualityNatural Water (Groundwater, Spring, etc.)
Capacity4people
A cold plunge bath that uses natural water pumped up from underground on the grounds, generously in a free-flowing style. It is characterized by a pleasant water temperature and the smooth quality of natural water. It gently envelops your heated body, letting you cool down slowly while the hot spring minerals sink into your skin.
Closed Days: None
〒437-1121 2022-3 Moroi, Fukuroi City, Shizuoka Prefecture
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