Average annual temperature is 9.5 °C
Absolute maximum temperature: 29.0 °C
Absolute minimum temperature: -27.9 °C
Number of sunny days: 162 days
Number of rainy days: 182 days
Number of snow days: 21 days
Look at detailed online map of Heron Island
* Weather data for Heron Island United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 10.9 | 11.8 | 9.6 | 22.6 | 23.9 | 26.7 | 28.0 | 27.6 | 29.0 | 23.1 | 14.1 | 13.5 |
| Average daytime temperature (°C) | 3.8 | 2.3 | 5.1 | 10.5 | 17.2 | 18.6 | 24.0 | 22.7 | 21.1 | 16.0 | 7.5 | 5.3 |
| Average temperature (°C) | 0.5 | -2.2 | 1.7 | 7.0 | 12.7 | 15.3 | 21.1 | 19.6 | 17.6 | 13.0 | 4.0 | 2.3 |
| Average night temperature (°C) | -2.5 | -6.5 | -1.7 | 4.0 | 8.7 | 12.7 | 18.6 | 16.7 | 15.0 | 10.1 | 1.1 | -0.4 |
| Absolute minimum temperature (°C) | -10.5 | -27.9 | -6.2 | -3.4 | 3.7 | 7.4 | 15.1 | 13.5 | 9.0 | 1.8 | -5.2 | -8.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.3 | 10.5 | 11.9 | 13.4 | 14.7 | 15.4 | 15.1 | 14.0 | 12.5 | 11.0 | 9.7 | 9.0 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.3 | 6.7 | 7.7 | 8.1 | 11.5 | 8.8 | 9.6 | 9.9 | 8.9 | 7.0 | 6.8 | 4.6 |
| Precipitation (mm) | 174 | 45 | 88 | 113 | 117 | 177 | 185 | 181 | 129 | 106 | 57 | 143 |
| Sunny days | 10 | 13 | 15 | 14 | 19 | 6 | 7 | 11 | 14 | 18 | 21 | 14 |
| Rainy days | 15 | 7 | 12 | 16 | 12 | 24 | 24 | 20 | 16 | 13 | 8 | 15 |
| Snow days | 6 | 8 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
The best time to visit Heron Island during the most sunny months:
Months with the longest average daylight duration in Heron Island:
The largest precipitation sum in Heron Island is at