December in Dessau-Roßlau is the rainiest, the windiest, and the cloudiest month of the year. In December, the weather in Dessau-Roßlau is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Dessau-Roßlau has 18 rainy, 10 cloudy, 2 sunny, and 1 partly cloudy day in December. The rains are usually light. December as well as January, February, and November is considered the most uncomfortable time to visit Dessau-Roßlau.