Average annual temperature is 23.4 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: 2.9 °C
Number of sunny days: 149 days
Number of rainy days: 216 days
Look at detailed online map of Post Harbour Island
* Weather data for Post Harbour 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) | 27.8 | 29.6 | 31.7 | 34.3 | 34.2 | 36.1 | 36.2 | 37.5 | 34.6 | 31.6 | 32.0 | 27.8 |
| Average daytime temperature (°C) | 22.2 | 25.6 | 27.1 | 29.3 | 30.7 | 30.7 | 33.5 | 33.9 | 32.0 | 28.7 | 25.7 | 22.0 |
| Average temperature (°C) | 16.8 | 20.1 | 21.5 | 24.0 | 25.0 | 26.6 | 29.0 | 29.4 | 27.1 | 23.8 | 20.4 | 17.5 |
| Average night temperature (°C) | 12.8 | 16.0 | 17.2 | 19.7 | 20.5 | 23.4 | 25.6 | 25.8 | 23.3 | 19.9 | 16.4 | 14.5 |
| Absolute minimum temperature (°C) | 2.9 | 8.8 | 7.8 | 13.9 | 16.4 | 20.5 | 24.1 | 23.8 | 20.3 | 12.8 | 7.4 | 7.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.6 | 11.2 | 12.0 | 12.8 | 13.5 | 13.9 | 13.7 | 13.1 | 12.3 | 11.5 | 10.8 | 10.4 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.6 | 9.7 | 10.2 | 10.3 | 12.1 | 11.4 | 11.0 | 11.3 | 10.6 | 9.6 | 7.9 | 7.0 |
| Precipitation (mm) | 57 | 14 | 57 | 76 | 107 | 189 | 168 | 151 | 113 | 50 | 34 | 105 |
| Sunny days | 23 | 19 | 16 | 10 | 13 | 4 | 1 | 2 | 7 | 19 | 16 | 19 |
| Rainy days | 8 | 9 | 15 | 20 | 18 | 26 | 30 | 29 | 23 | 12 | 14 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Post Harbour Island is at