In December, the weather in Andorra la Vella is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Andorra la Vella has 9 sunny, 9 partly cloudy, 5 cloudy, 4 rainy, and 4 snowy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Andorra la Vella.