September in Paamiut is the rainiest month of the year. In September, the weather in Paamiut is typically cold. Average daily high temperature in September is about 6 degrees above zero. On average, Paamiut has 12 rainy, 11 sunny, 5 partly cloudy, and 2 cloudy days in September. The rains are usually heavy. September as well as May, June, and October is considered the most uncomfortable time to visit Paamiut.