December in Sodertalje is the windiest month of the year. In December, the weather in Sodertalje is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Sodertalje has 14 rainy, 9 cloudy, 3 snowy, 3 sunny, and 2 partly cloudy days in December. The rains are usually moderate. December as well as March and November is considered the most uncomfortable time to visit Sodertalje.