In December, the weather in Flekkefjord is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Flekkefjord has 13 cloudy, 10 rainy, 3 sunny, 3 partly cloudy, and 2 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 Flekkefjord.