In September, the weather in Breuil-Cervinia is typically cold. Average daily high temperature in September is about 8 degrees above zero. On average, Breuil-Cervinia has 24 rainy, 5 sunny, and 1 cloudy day in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Breuil-Cervinia.