September in Gjoa Haven is the rainiest and the windiest month of the year. In September, the weather in Gjoa Haven is typically cold. Average daily high temperature in September is about 2 degrees above zero. On average, Gjoa Haven has 20 cloudy, 6 rainy, 3 sunny, and 1 snowy day in September. The rains are usually light. September as well as January, February, March, and April is considered the most uncomfortable time to visit Gjoa Haven.