In April, the weather in Clermont-Ferrand is typically warm. Average daily high temperature in April is about 14 degrees above zero. On average, Clermont-Ferrand has 14 rainy, 8 sunny, 7 partly cloudy, and 1 cloudy day in April. The rains are usually heavy. April as well as January, February, March, and November is considered the most uncomfortable time to visit Clermont-Ferrand.