July in Zhongshan is the hottest month of the year. In July, the weather in Zhongshan is typically hot. Average daily high temperature in July is about 33 degrees above zero. On average, Zhongshan has 23 rainy, 4 sunny, 3 partly cloudy, and 1 cloudy day in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Zhongshan.