September in Sachs Harbour is the rainiest, the windiest, and the cloudiest month of the year. In September, the weather in Sachs Harbour is typically cold. Average daily high temperature in September is about 1 degree above zero. On average, Sachs Harbour has 18 cloudy, 6 rainy, 3 snowy, and 3 sunny days in September. The rains are usually light. September as well as January, February, March, and April is considered the most uncomfortable time to visit Sachs Harbour.