March in Kusatsu is the windiest month of the year. In March, the weather in Kusatsu is typically cold. Average daily high temperature in March is about 5 degrees above zero. On average, Kusatsu has 10 partly cloudy, 7 rainy, 7 cloudy, 4 snowy, and 3 sunny days in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Kusatsu.