In February, the weather in Thun is typically cold. Average daily high temperature in February is about 1 degree above zero. On average, Thun has 8 sunny, 6 snowy, 5 rainy, 5 cloudy, and 5 partly cloudy days in February. The snowfalls are usually heavy. February as well as March, April, May, and June is considered the most uncomfortable time to visit Thun.