January in Sydney averages a daily high of 26.9°C with nights around 20°C. Expect roughly 10.1 wet days totalling 93.7mm. 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 January data.