Yumomi Performance

Yumomi (湯もみ) in Kusatsu is a traditional and unique method of cooling hot spring water without diluting it with cold water. Locals use large wooden paddles to stir the steaming water, carefully bringing it down to a comfortable bathing temperature while preserving its rich minerals and therapeutic properties. This centuries-old technique ensures that the hot spring water maintains its natural benefits, allowing bathers to fully enjoy its healing effects.

The Yumomi experience goes beyond just a practical process—it’s a cultural performance that showcases Kusatsu’s rich spa traditions. Held daily at the Netsunoyu building next to Yubatake, the Yumomi show is a lively and entertaining event featuring traditional folk songs and dances performed by a local troupe. The 30-minute performance even allows some visitors to participate in the stirring process, making it an interactive and enjoyable way to immerse yourself in the local culture and learn about Kusatsu’s deep connection to its onsen heritage.