December in Deauville is the windiest month of the year. In December, the weather in Deauville is typically cold. Average daily high temperature in December is about 8 degrees above zero. On average, Deauville has 20 rainy, 5 partly cloudy, 4 sunny, and 2 cloudy days in December. The rains are usually moderate. December as well as January, February, and November is considered the most uncomfortable time to visit Deauville.