Average annual temperature is 18.2 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 2.9 °C
Number of sunny days: 181 days
Number of rainy days: 184 days
Look at detailed online map of Iona
* Weather data for Iona 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) | 36.4 | 38.1 | 38.4 | 26.3 | 23.1 | 23.5 | 23.3 | 25.1 | 32.6 | 34.7 | 35.2 | 40.5 |
| Average daytime temperature (°C) | 28.3 | 30.1 | 29.3 | 22.7 | 19.8 | 18.4 | 18.6 | 20.3 | 24.4 | 26.8 | 26.9 | 30.5 |
| Average temperature (°C) | 22.3 | 23.2 | 22.7 | 17.4 | 13.8 | 12.7 | 12.9 | 13.6 | 16.9 | 19.1 | 20.7 | 23.9 |
| Average night temperature (°C) | 17.6 | 17.9 | 18.0 | 13.5 | 9.6 | 8.7 | 8.7 | 8.6 | 10.6 | 12.7 | 16.1 | 18.8 |
| Absolute minimum temperature (°C) | 13.7 | 14.4 | 13.1 | 9.9 | 5.7 | 2.9 | 3.5 | 5.8 | 5.6 | 8.3 | 12.4 | 14.3 |
| 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) | 14.0 | 13.3 | 12.3 | 11.3 | 10.5 | 10.0 | 10.2 | 10.9 | 11.9 | 12.9 | 13.8 | 14.3 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 10.6 | 11.2 | 9.7 | 9.1 | 8.9 | 8.2 | 8.4 | 9.5 | 10.6 | 11.2 | 10.2 | 11.5 |
| Precipitation (mm) | 88 | 56 | 86 | 64 | 5 | 14 | 17 | 48 | 13 | 55 | 101 | 70 |
| Sunny days | 9 | 11 | 10 | 10 | 20 | 21 | 23 | 17 | 22 | 20 | 6 | 12 |
| Rainy days | 22 | 17 | 21 | 20 | 11 | 9 | 8 | 14 | 8 | 11 | 24 | 19 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iona is at