May in Sydney averages a daily high of 20.9°C with nights around 12.3°C. Expect roughly 9.1 wet days totalling 106.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Sydney is July–February.
Based on SYDNEY OBSERVATORY HILL, AS (0.8km), 1995–2024. 26 years of May data.