July in Suzhou is the rainiest, the cloudiest, and the hottest month of the year. In July, the weather in Suzhou is typically hot. Average daily high temperature in July is about 31 degrees above zero. On average, Suzhou has 16 rainy, 6 sunny, 5 partly cloudy, and 4 cloudy days in July. The rains are usually heavy. July as well as January, February, and August is considered the most uncomfortable time to visit Suzhou.