Weather in Sydney in September
September in Sydney is mild with average temperatures around 16.7°C (62.1°F). Light rainfall with only 43mm expected.
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
19.7°C
67.5°F
Low
13.7°C
56.7°F
Precipitation
43 mm
1.7 inches
~7 rainy days
Conditions
Humidity
68%
Comparison to Adjacent Months
September is 2.1°C warmer than August.
September is 21mm drier than October.