August in Nanjing is the cloudiest month of the year. In August, the weather in Nanjing is typically hot. Average daily high temperature in August is about 31 degrees above zero. On average, Nanjing has 15 rainy, 9 partly cloudy, 4 sunny, and 3 cloudy days in August. The rains are usually heavy. August as well as January, February, and July is considered the most uncomfortable time to visit Nanjing.