December in Billund is the cloudiest month of the year. In December, the weather in Billund is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Billund has 11 rainy, 9 cloudy, 8 partly cloudy, 2 sunny, and 1 snowy day in December. The rains are usually moderate. December as well as January, February, March, and April is considered the most uncomfortable time to visit Billund.