Average annual temperature is 25.1 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 12.7 °C
Number of sunny days: 338 days
Number of rainy days: 27 days
Look at detailed online map of Old Onslow
* Weather data for Old Onslow Australia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 40.5 | 35.8 | 37.6 | 34.1 | 28.6 | 26.5 | 26.5 | 30.9 | 37.3 | 39.9 | 38.2 | 34.3 |
| Average daytime temperature (°C) | 30.1 | 31.2 | 30.9 | 29.0 | 26.2 | 22.8 | 22.7 | 24.9 | 27.9 | 31.3 | 29.0 | 28.4 |
| Average temperature (°C) | 27.8 | 29.3 | 29.1 | 26.3 | 24.0 | 20.0 | 19.4 | 21.8 | 24.1 | 27.6 | 25.8 | 26.2 |
| Average night temperature (°C) | 25.8 | 27.5 | 27.1 | 23.2 | 21.3 | 16.7 | 15.7 | 18.5 | 20.6 | 24.7 | 22.7 | 23.8 |
| Absolute minimum temperature (°C) | 23.5 | 25.0 | 25.0 | 20.5 | 18.1 | 12.8 | 12.7 | 15.9 | 17.7 | 18.8 | 20.5 | 21.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.3 | 12.8 | 12.2 | 11.6 | 11.1 | 10.8 | 11.0 | 11.4 | 12.0 | 12.6 | 13.1 | 13.4 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 11.0 | 12.0 | 12.0 | 13.0 |
| Sunshine mean duration (h) | 12.4 | 11.5 | 10.8 | 10.3 | 9.5 | 9.1 | 9.8 | 10.1 | 11.1 | 11.8 | 12.1 | 12.5 |
| Precipitation (mm) | 9 | 67 | 38 | 4 | 0 | 26 | 5 | 3 | 0 | 0 | 0 | 0 |
| Sunny days | 26 | 23 | 25 | 26 | 31 | 26 | 30 | 29 | 30 | 31 | 30 | 31 |
| Rainy days | 5 | 5 | 6 | 4 | 0 | 4 | 1 | 2 | 0 | 0 | 0 | 0 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Old Onslow is at