Average temperature in September is 15.7 °C
Average daytime temperature is 20 °C
Average night temperature is 11.8 °C
Absolute maximum temperature: 30.8 °C
Absolute minimum temperature: 4.2 °C
Number of sunny days: 8
Number of rainy days: 22
Number of snow days:
Precipitation sum: 68 mm
* Weather data for Mandurah Australia is based on climate observations for 2023 year
| September (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 20.7 | 17.8 | 14.9 | 17.1 | 18.7 | 16.1 | 17.6 | 22.1 | 20.2 | 19.8 | 21 | 21.8 | 15.8 | 18 | 19.2 | 19.5 | 18 | 17.7 | 17.9 | 19.2 | 23.2 | 26.8 | 17.6 | 21 | 19.1 | 22.4 | 30.8 | 28 | 19.4 | 19.2 |
| Apparent max temperature | 19.8 | 15.1 | 11.6 | 14.6 | 16.3 | 12.8 | 16.8 | 19.8 | 19.9 | 18.2 | 20.8 | 21.4 | 12.5 | 15.5 | 17.1 | 19.4 | 16.8 | 15.2 | 16.2 | 19.4 | 25.2 | 29.6 | 16.1 | 22.4 | 19.9 | 23.6 | 32.2 | 31 | 19.8 | 18.9 |
| Mean temperature | 16.2 | 14.9 | 13.6 | 15.1 | 15.6 | 10.8 | 11.8 | 17.2 | 15.8 | 15.6 | 16.5 | 17.8 | 14.2 | 16.9 | 16.7 | 15.5 | 13.5 | 15.9 | 15 | 14.2 | 16.8 | 19.2 | 13.9 | 14.3 | 14 | 16.4 | 21.6 | 19.1 | 16.7 | 15.7 |
| Apparent mean temperature | 10.9 | 6.1 | 6.9 | 10.7 | 9 | 0.8 | 5.1 | 8.1 | 10.6 | 11.8 | 13.1 | 13.6 | 7.1 | 12.8 | 11.9 | 8.4 | 8 | 13.1 | 11.5 | 8.4 | 12 | 13.9 | 7.1 | 6.9 | 6.9 | 9.6 | 13 | 11.2 | 13.2 | 11 |
| Minimum temperature | 12.5 | 11.1 | 12 | 12.4 | 13 | 4.2 | 7.4 | 12.4 | 12 | 12.6 | 13.3 | 15.4 | 12.1 | 15.1 | 12.1 | 10.6 | 9.6 | 14.6 | 12 | 9.9 | 12.8 | 15.3 | 9.1 | 9.3 | 8.5 | 11.7 | 13.6 | 11.8 | 14.4 | 12.2 |
| Apparent min temperature | 15.2 | 11.2 | 9.2 | 13 | 12.7 | 7.3 | 9.2 | 13.6 | 15.4 | 14.8 | 16.2 | 17.2 | 9.6 | 14.8 | 16 | 14.7 | 11.9 | 14 | 14.2 | 12.6 | 16.9 | 19.6 | 12.4 | 13 | 12.7 | 14.8 | 21.8 | 20.1 | 15.8 | 14.7 |
| September | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 11.4 | 11.5 | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 12 | 12 | 12 | 12.1 | 12.1 | 12.1 | 12.2 | 12.2 | 12.2 | 12.3 | 12.3 | 12.3 | 12.4 |
| Sunshine duration (h) | 8.7 | 10.5 | 10.6 | 10.6 | 10.6 | 10.7 | 10.7 | 10.2 | 10.2 | 10.7 | 10.4 | 10.4 | 3.5 | 3.1 | 9.7 | 10.9 | 10.8 | 9 | 5.2 | 10.3 | 11.3 | 10.8 | 8.3 | 11.4 | 11.4 | 11.5 | 11.5 | 11.3 | 6.7 | 11.6 |
| Precipitation (mm) | 5 | 8.8 | 2.4 | 1.9 | 2.6 | 0 | 0 | 0 | 2.5 | 0.5 | 0.8 | 8.3 | 23.2 | 2 | 3.5 | 1.6 | 0.1 | 0.3 | 1 | 0 | 0.2 | 0.3 | 0.3 | 0 | 0 | 0 | 0.3 | 0 | 0.9 | 1.5 |
| Precipitation hours | 11 | 15 | 10 | 10 | 10 | 0 | 0 | 0 | 5 | 3 | 6 | 8 | 13 | 9 | 16 | 10 | 1 | 3 | 7 | 0 | 1 | 3 | 3 | 0 | 0 | 0 | 1 | 0 | 8 | 7 |
| Wind speed (m/s) | 28.9 | 36.9 | 30.1 | 28 | 28.7 | 30.2 | 21.4 | 21.6 | 19.4 | 20.9 | 20.7 | 27.7 | 47 | 25.1 | 25.7 | 17 | 17.1 | 24.3 | 19.3 | 17.6 | 13 | 16.1 | 18.2 | 22 | 23.6 | 26.4 | 27.4 | 16.1 | 23.2 | 19.4 |
In September 2023, the highest daytime temperature in Mandurah was 30.8°C.
While the minimum temperature at night dropped to 4.2°C.
The average nighttime and daytime temperatures during September in Mandurah are 11.8°C and 20°C respectively.
The precipitation sum in September is about 68 mm.