July in Changsha is the hottest month of the year. In July, the weather in Changsha is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Changsha has 22 rainy, 8 sunny, and 1 partly cloudy day in July. The rains are usually heavy. July as well as February, March, April, and May is considered the most uncomfortable time to visit Changsha.