In May, the weather in Umiujaq is typically cold. Average daily high temperature in May is about 3 degrees above zero. On average, Umiujaq has 18 cloudy, 8 rainy, 3 sunny, and 2 snowy days in May. The rains are usually moderate. May as well as January, February, March, and July is considered the most uncomfortable time to visit Umiujaq.