June in Suzhou is the cloudiest month of the year. In June, the weather in Suzhou is typically warm. Average daily high temperature in June is about 27 degrees above zero. On average, Suzhou has 20 rainy, 6 cloudy, 3 sunny, and 1 partly cloudy day in June. The rains are usually heavy. June as well as January, July, and August is considered the most uncomfortable time to visit Suzhou.