July in Canberra is the coldest month of the year. In July, the weather in Canberra is typically cold. Average daily high temperature in July is about 9 degrees above zero. On average, Canberra has 13 sunny, 12 partly cloudy, 3 rainy, and 3 cloudy days in July. The rains are usually light. July as well as June and August is considered the most uncomfortable time to visit Canberra.