September in Canberra averages a daily high of 17.7°C with nights around 4°C. Expect roughly 8.4 wet days totalling 52mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Canberra is February–April.
Based on CANBERRA FORESTRY, AS (3.1km), 1995–2024. 22 years of September data.