In May, the weather in Waskaganish is typically warm. Average daily high temperature in May is about 10 degrees above zero. On average, Waskaganish has 16 rainy, 8 cloudy, 4 sunny, and 3 partly cloudy days in May. The rains are usually heavy. May as well as January, February, April, and September is considered the most uncomfortable time to visit Waskaganish.