In June, the weather in Warrnambool is typically warm. Average daily high temperature in June is about 13 degrees above zero. On average, Warrnambool has 17 rainy, 5 sunny, 5 cloudy, and 3 partly cloudy days in June. The rains are usually moderate. June as well as May, July, August, and September is considered the most uncomfortable time to visit Warrnambool.