August in Geelong averages a daily high of 15.6°C with nights around 5.6°C. Expect roughly 11.4 wet days totalling 36.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Geelong is November–April.
Based on AVALON AIRPORT, AS (16.7km), 1995–2024. 30 years of August data.