December in Rorvik is the windiest month of the year. In December, the weather in Rorvik is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Rorvik has 25 rainy, 4 sunny, 1 snowy, and 1 partly cloudy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Rorvik.