May in Mianyang is the windiest month of the year. In May, the weather in Mianyang is typically warm. Average daily high temperature in May is about 26 degrees above zero. On average, Mianyang has 14 cloudy, 7 partly cloudy, 6 sunny, and 4 rainy days in May. The rains are usually heavy. May as well as April is considered the most comfortable time to visit Mianyang.