The temperatures in Sydney in September are usually low and can range between 12°C and 19°C.
You can expect about 3 to 8 days of rain in Sydney during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
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
19° / 12°
Rainy Days
5
Snowy Days
0
Dry Days
25
Rainfall
103
mm
Sun Hours
8.9
Hrs
