May in Deyang is the windiest month of the year. In May, the weather in Deyang is typically warm. Average daily high temperature in May is about 25 degrees above zero. On average, Deyang has 10 cloudy, 10 partly cloudy, 6 sunny, and 5 rainy days in May. The rains are usually heavy. May as well as April and October is considered the most comfortable time to visit Deyang.