August in Zigong is the sunniest month of the year. In August, the weather in Zigong is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Zigong has 23 rainy, 7 sunny, and 1 cloudy day in August. The rains are usually heavy. August as well as January, March, April, and May is considered the most uncomfortable time to visit Zigong.