The temperatures in Sydney in September are comfortable with low of 12°C and and high up to 22°C.
The wather in Sydney in September can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Sydney in September 2025.
If you’re planning to visit Sydney in the near future, we highly recommend that you review the 14 day weather forecast for Sydney before you arrive.
Temperatures
22° / 12°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
55
mm
Sun Hours
10.8
Hrs
