In September, the weather in Nykøbing Mors is typically warm. Average daily high temperature in September is about 16 degrees above zero. On average, Nykøbing Mors has 19 rainy, 7 sunny, 3 partly cloudy, and 1 cloudy day in September. The rains are usually heavy. September as well as January, February, October, and November is considered the most uncomfortable time to visit Nykøbing Mors.