September in Pakenham is the windiest month of the year. In September, the weather in Pakenham is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Pakenham has 17 rainy, 6 sunny, 6 partly cloudy, and 1 cloudy day in September. The rains are usually moderate. September as well as May, June, July, and August is considered the most uncomfortable time to visit Pakenham.