Average annual temperature is 16.9 °C
Absolute maximum temperature: 39.9 °C
Absolute minimum temperature: 2.6 °C
Number of sunny days: 144 days
Number of rainy days: 221 days
Look at detailed online map of Hornsby
* Weather data for Hornsby 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) | 33.8 | 35.7 | 37.1 | 25.9 | 22.1 | 21.7 | 23.0 | 24.6 | 33.2 | 33.5 | 31.3 | 39.9 |
| Average daytime temperature (°C) | 26.0 | 27.6 | 26.8 | 21.3 | 18.4 | 17.0 | 17.9 | 18.9 | 23.3 | 24.9 | 24.3 | 28.0 |
| Average temperature (°C) | 20.7 | 21.7 | 21.0 | 16.3 | 12.5 | 11.6 | 12.1 | 12.8 | 16.3 | 17.7 | 19.0 | 21.9 |
| Average night temperature (°C) | 16.7 | 17.1 | 16.9 | 12.4 | 8.2 | 7.6 | 7.6 | 8.1 | 10.7 | 12.1 | 15.0 | 17.4 |
| Absolute minimum temperature (°C) | 12.6 | 13.7 | 11.5 | 8.2 | 4.4 | 3.5 | 2.6 | 4.7 | 5.5 | 8.4 | 10.8 | 13.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.1 | 13.3 | 12.3 | 11.2 | 10.4 | 9.9 | 10.2 | 10.9 | 11.9 | 12.9 | 13.9 | 14.3 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 10.2 | 10.7 | 9.0 | 8.9 | 8.9 | 7.9 | 8.7 | 9.2 | 10.5 | 11.0 | 9.6 | 11.1 |
| Precipitation (mm) | 149 | 78 | 106 | 65 | 23 | 25 | 17 | 39 | 19 | 33 | 168 | 112 |
| Sunny days | 3 | 6 | 11 | 6 | 22 | 18 | 21 | 10 | 22 | 15 | 4 | 6 |
| Rainy days | 28 | 22 | 20 | 24 | 9 | 12 | 10 | 21 | 8 | 16 | 26 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hornsby is at