January in La Clusaz is the coldest month of the year. In January, the weather in La Clusaz is typically cold. Average daily high temperature in January is about 2 degrees above zero. On average, La Clusaz has 11 sunny, 9 rainy, 7 partly cloudy, 3 cloudy, and 1 snowy day in January. The rains are usually heavy. January as well as February, March, April, and May is considered the most uncomfortable time to visit La Clusaz.