Average annual temperature is 11.9 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -14.8 °C
Number of sunny days: 156 days
Number of rainy days: 201 days
Number of snow days: 8 days
Look at detailed online map of Hess Island
* Weather data for Hess 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) | 15.5 | 17.5 | 16.6 | 30.4 | 31.9 | 33.7 | 33.5 | 30.9 | 33.3 | 28.2 | 19.1 | 13.4 |
| Average daytime temperature (°C) | 6.8 | 8.5 | 9.5 | 18.6 | 22.2 | 25.4 | 29.5 | 27.0 | 24.1 | 18.4 | 10.2 | 7.8 |
| Average temperature (°C) | 3.3 | 2.6 | 3.9 | 11.9 | 14.8 | 19.4 | 23.6 | 21.5 | 18.6 | 13.3 | 5.0 | 3.9 |
| Average night temperature (°C) | 0.2 | -2.2 | -0.6 | 6.2 | 7.9 | 13.7 | 18.5 | 16.9 | 14.1 | 9.1 | 1.0 | 0.5 |
| Absolute minimum temperature (°C) | -6.0 | -14.8 | -6.0 | -1.3 | 2.1 | 8.0 | 14.2 | 12.9 | 8.9 | 1.9 | -5.3 | -4.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.2 | 6.9 | 6.9 | 8.8 | 11.9 | 11.4 | 11.9 | 10.8 | 8.6 | 7.6 | 7.2 | 3.6 |
| Precipitation (mm) | 105 | 36 | 95 | 118 | 31 | 122 | 118 | 154 | 167 | 96 | 42 | 127 |
| Sunny days | 9 | 15 | 10 | 15 | 22 | 9 | 9 | 7 | 15 | 15 | 17 | 13 |
| Rainy days | 20 | 12 | 20 | 15 | 9 | 21 | 22 | 24 | 15 | 16 | 12 | 15 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
The best time to visit Hess Island during the most sunny months:
The largest precipitation sum in Hess Island is at