December in Kristiansund is the rainiest, the windiest, and the cloudiest month of the year. In December, the weather in Kristiansund is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Kristiansund has 26 rainy, 4 sunny, and 1 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 Kristiansund.