May in Nuuk is the rainiest month of the year. In May, the weather in Nuuk is typically cold. Average daily high temperature in May is about 2 degrees above zero. On average, Nuuk has 13 rainy, 7 partly cloudy, 6 sunny, and 5 cloudy days in May. The rains are usually moderate. May as well as September is considered the most uncomfortable time to visit Nuuk.