August in Maniitsoq is the rainiest month of the year. In August, the weather in Maniitsoq is typically cold. Average daily high temperature in August is about 9 degrees above zero. On average, Maniitsoq has 11 rainy, 8 cloudy, 6 sunny, and 6 partly cloudy days in August. The rains are usually heavy. August as well as January, February, May, and June is considered the most uncomfortable time to visit Maniitsoq.