July in Mandurah averages a daily high of 17.6°C with nights around 10.9°C. Expect roughly 16.9 wet days totalling 116.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Mandurah is October–April.
Based on MANDURAH, AS (1.1km), 1995–2024. 23 years of July data.