July in Canberra is the coldest month of the year. In July, the weather in Canberra is typically warm. Average daily high temperature in July is about 10 degrees above zero. On average, Canberra has 11 sunny, 10 partly cloudy, 8 rainy, and 2 cloudy days in July. The rains are usually moderate. July as well as June, August, and September is considered the most uncomfortable time to visit Canberra.