December in Mörfelden-Walldorf is the windiest month of the year. In December, the weather in Mörfelden-Walldorf is typically cold. Average daily high temperature in December is about 5 degrees above zero. On average, Mörfelden-Walldorf has 14 rainy, 12 cloudy, 3 sunny, and 2 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 Mörfelden-Walldorf.