July in Nanjing is the rainiest and the hottest month of the year. In July, the weather in Nanjing is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Nanjing has 16 rainy, 8 partly cloudy, 6 sunny, and 1 cloudy day in July. The rains are usually heavy. July as well as January, February, and August is considered the most uncomfortable time to visit Nanjing.