June in Canberra is the cloudiest month of the year. In June, the weather in Canberra is typically warm. Average daily high temperature in June is about 10 degrees above zero. On average, Canberra has 14 partly cloudy, 12 sunny, and 4 rainy days in June. The rains are usually light. June as well as July and August is considered the most uncomfortable time to visit Canberra.