In March, the weather in Clervaux is typically cold. Average daily high temperature in March is about 7 degrees above zero. On average, Clervaux has 12 rainy, 9 cloudy, 6 partly cloudy, 3 sunny, and 1 snowy day in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Clervaux.