August in Tarneit averages a daily high of 15.4°C with nights around 6.2°C. Expect roughly 12.3 wet days totalling 37.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Tarneit is November–April.
Based on LAVERTON RAAF, AS (8.8km), 1995–2024. 30 years of August data.