September in Apollo Bay is the windiest month of the year. In September, the weather in Apollo Bay is typically warm. Average daily high temperature in September is about 13 degrees above zero. On average, Apollo Bay has 16 rainy, 9 partly cloudy, 4 sunny, and 1 cloudy day in September. The rains are usually heavy. September as well as May, June, July, and August is considered the most uncomfortable time to visit Apollo Bay.