The temperatures in Perth in September are usually low and can range between 11°C and 19°C.
You can expect about 3 to 8 days of rain in Perth 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 Perth in September 2025.
If you’re planning to visit Perth in the near future, we highly recommend that you review the 14 day weather forecast for Perth before you arrive.
Temperatures
19° / 11°
Rainy Days
4
Snowy Days
0
Dry Days
26
Rainfall
82
mm
Sun Hours
10.6
Hrs
