May in Verdun is the rainiest month of the year. In May, the weather in Verdun is typically warm. Average daily high temperature in May is about 16 degrees above zero. On average, Verdun has 20 rainy, 9 sunny, and 2 partly cloudy days in May. The rains are usually heavy. May as well as January, February, November, and December is considered the most uncomfortable time to visit Verdun.