December in Sandnessjoen is the windiest month of the year. In December, the weather in Sandnessjoen is typically freezing. Average daily high temperature in December is about zero. On average, Sandnessjoen has 13 snowy, 12 rainy, 4 sunny, 1 cloudy, and 1 partly cloudy day in December. The snowfalls are usually heavy. December as well as March, April, May, and June is considered the most uncomfortable time to visit Sandnessjoen.