December in Dammarie-les-Lys is the windiest month of the year. In December, the weather in Dammarie-les-Lys is typically cold. Average daily high temperature in December is about 6 degrees above zero. On average, Dammarie-les-Lys has 17 rainy, 7 cloudy, 4 sunny, and 3 partly 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 Dammarie-les-Lys.