In September, the weather in Changchun is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Changchun has 19 sunny, 7 partly cloudy, and 4 rainy days in September. The rains are usually moderate. September as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most comfortable time to visit Changchun.