August in Nuuk is the rainiest month of the year. In August, the weather in Nuuk is typically warm. Average daily high temperature in August is about 10 degrees above zero. On average, Nuuk has 12 rainy, 11 cloudy, 4 sunny, and 4 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 Nuuk.