Average annual temperature is 18.6 °C
Absolute maximum temperature: 37.0 °C
Absolute minimum temperature: 1.5 °C
Number of sunny days: 174 days
Number of rainy days: 191 days
Look at detailed online map of Merton
* Weather data for Merton 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) | 35.4 | 36.9 | 36.2 | 28.8 | 25.9 | 25.0 | 25.4 | 27.4 | 34.3 | 36.4 | 35.9 | 37.0 |
| Average daytime temperature (°C) | 29.8 | 29.3 | 29.6 | 24.1 | 21.2 | 20.6 | 20.2 | 22.5 | 25.5 | 28.2 | 27.3 | 32.3 |
| Average temperature (°C) | 22.9 | 22.8 | 23.2 | 18.1 | 13.7 | 12.6 | 12.8 | 14.7 | 17.4 | 20.3 | 20.7 | 24.7 |
| Average night temperature (°C) | 18.0 | 17.6 | 18.4 | 13.5 | 7.9 | 6.6 | 7.0 | 8.9 | 10.6 | 13.6 | 16.2 | 19.0 |
| Absolute minimum temperature (°C) | 15.3 | 13.7 | 11.5 | 7.7 | 3.2 | 1.5 | 2.4 | 5.3 | 6.3 | 9.4 | 11.5 | 15.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 13.0 | 13.0 | 12.0 | 11.0 | 10.0 | 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 | 10.3 | 8.6 | 9.0 | 9.0 | 8.6 | 8.7 | 9.6 | 10.1 | 10.7 | 9.2 | 11.2 |
| Precipitation (mm) | 87 | 63 | 106 | 36 | 73 | 13 | 21 | 20 | 25 | 45 | 163 | 122 |
| Sunny days | 7 | 8 | 9 | 12 | 24 | 21 | 20 | 15 | 18 | 22 | 5 | 13 |
| Rainy days | 24 | 20 | 22 | 18 | 7 | 9 | 11 | 16 | 12 | 9 | 25 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Merton is at