Average annual temperature is 26.8 °C
Absolute maximum temperature: 42.4 °C
Absolute minimum temperature: 12.5 °C
Number of sunny days: 224 days
Number of rainy days: 141 days
Look at detailed online map of Costello
* Weather data for Costello 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) | 35.1 | 35.8 | 34.1 | 34.5 | 33.0 | 32.2 | 31.9 | 34.0 | 38.2 | 42.4 | 42.2 | 41.6 |
| Average daytime temperature (°C) | 32.7 | 32.1 | 31.7 | 32.0 | 29.5 | 30.6 | 28.5 | 31.3 | 34.1 | 37.8 | 37.8 | 39.4 |
| Average temperature (°C) | 28.0 | 27.4 | 27.0 | 26.9 | 23.1 | 24.0 | 22.2 | 23.9 | 26.3 | 29.6 | 30.7 | 32.5 |
| Average night temperature (°C) | 24.8 | 23.8 | 23.1 | 22.7 | 18.1 | 18.9 | 17.5 | 17.9 | 19.5 | 22.7 | 25.3 | 27.2 |
| Absolute minimum temperature (°C) | 23.2 | 20.7 | 19.0 | 18.2 | 13.5 | 14.0 | 12.5 | 15.3 | 15.5 | 20.3 | 23.3 | 25.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 |
| Daylight mean duration (h) | 12.9 | 12.6 | 12.2 | 11.8 | 11.4 | 11.3 | 11.4 | 11.6 | 12.0 | 12.4 | 12.8 | 13.0 |
| Daylight minimum duration (h) | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 |
| Sunshine mean duration (h) | 9.0 | 8.8 | 9.8 | 10.6 | 10.5 | 10.0 | 10.0 | 10.7 | 11.2 | 11.6 | 11.4 | 11.5 |
| Precipitation (mm) | 227 | 308 | 132 | 48 | 0 | 0 | 3 | 0 | 1 | 2 | 66 | 37 |
| Sunny days | 3 | 8 | 10 | 11 | 31 | 25 | 25 | 30 | 26 | 27 | 16 | 12 |
| Rainy days | 28 | 20 | 21 | 19 | 0 | 5 | 6 | 1 | 4 | 4 | 14 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Costello is at