June in Sydney averages a daily high of 18.5°C with nights around 8°C. Expect roughly 12.9 wet days totalling 105.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Sydney is July–September.
Based on SYDNEY A, NS CA (10.8km), 1995–2024. 20 years of June data.