Weather in Perth in September
September in Perth is mild with average temperatures around 15.8°C (60.4°F). Moderate rainfall of 70mm spread over 11 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
18.1°C
64.6°F
Low
13.5°C
56.3°F
Precipitation
70 mm
2.7 inches
~11 rainy days
Conditions
Humidity
74%
Comparison to Adjacent Months
September is 37mm drier than August.
September is 37mm wetter than October.