July in Tarneit averages a daily high of 14.1°C with nights around 5.7°C. Expect roughly 11.5 wet days totalling 33mm. 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 July data.