Average annual temperature is 19.1 °C
Absolute maximum temperature: 38.1 °C
Absolute minimum temperature: 5.2 °C
Number of sunny days: 153 days
Number of rainy days: 212 days
Look at detailed online map of Narellan
* Weather data for Narellan 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) | 35.9 | 38.1 | 36.1 | 28.7 | 24.5 | 26.5 | 25.5 | 27.9 | 34.8 | 35.1 | 35.4 | 36.6 |
| Average daytime temperature (°C) | 29.2 | 29.3 | 29.2 | 24.2 | 21.3 | 21.1 | 20.7 | 22.6 | 25.5 | 27.8 | 26.9 | 32.2 |
| Average temperature (°C) | 22.7 | 22.9 | 23.2 | 18.6 | 14.7 | 14.3 | 14.1 | 15.6 | 17.8 | 20.3 | 20.8 | 24.8 |
| Average night temperature (°C) | 18.2 | 18.2 | 19.4 | 14.7 | 9.9 | 9.2 | 9.3 | 10.5 | 12.1 | 14.9 | 16.5 | 19.5 |
| Absolute minimum temperature (°C) | 14.9 | 14.5 | 14.3 | 11.0 | 5.8 | 5.2 | 5.7 | 7.0 | 7.6 | 9.7 | 12.0 | 15.9 |
| 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 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 |
| Daylight mean duration (h) | 13.7 | 13.1 | 12.3 | 11.4 | 10.7 | 10.3 | 10.5 | 11.1 | 11.9 | 12.8 | 13.5 | 13.9 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 |
| Sunshine mean duration (h) | 10.5 | 10.6 | 8.4 | 8.8 | 8.8 | 8.5 | 8.3 | 9.5 | 10.4 | 10.4 | 9.6 | 11.1 |
| Precipitation (mm) | 119 | 69 | 92 | 42 | 98 | 9 | 19 | 22 | 24 | 59 | 159 | 117 |
| Sunny days | 3 | 7 | 9 | 9 | 22 | 22 | 22 | 12 | 16 | 14 | 6 | 11 |
| Rainy days | 28 | 21 | 22 | 21 | 9 | 8 | 9 | 19 | 14 | 17 | 24 | 20 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Narellan is at