August in Yiyang is the rainiest month of the year. In August, the weather in Yiyang is typically hot. Average daily high temperature in August is about 30 degrees above zero. On average, Yiyang has 22 rainy, 7 sunny, 1 cloudy, and 1 partly cloudy day in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Yiyang.