May in Wabush is the sunniest month of the year. In May, the weather in Wabush is typically cold. Average daily high temperature in May is about 6 degrees above zero. On average, Wabush has 17 rainy, 11 cloudy, and 3 sunny days in May. The rains are usually heavy. May as well as January, February, March, and June is considered the most uncomfortable time to visit Wabush.