In December, the weather in Herrljunga is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Herrljunga has 13 cloudy, 7 partly cloudy, 6 rainy, 3 sunny, and 2 snowy days in December. The rains are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Herrljunga.