Average annual temperature is 13.0 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -10.2 °C
Number of sunny days: 189 days
Number of rainy days: 168 days
Number of snow days: 8 days
Look at detailed online map of Saint Omer
* Weather data for Saint Omer 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) | 17.5 | 20.8 | 22.5 | 27.1 | 29.7 | 31.6 | 33.7 | 33.3 | 31.9 | 29.7 | 24.8 | 16.0 |
| Average daytime temperature (°C) | 6.7 | 11.0 | 11.6 | 18.1 | 23.1 | 27.2 | 29.1 | 27.8 | 26.1 | 19.6 | 12.6 | 8.9 |
| Average temperature (°C) | 3.1 | 4.5 | 5.5 | 11.5 | 17.0 | 21.3 | 23.7 | 22.6 | 20.4 | 14.1 | 6.9 | 4.5 |
| Average night temperature (°C) | 0.1 | 0.0 | 1.0 | 6.0 | 11.3 | 16.0 | 19.0 | 18.0 | 15.3 | 9.9 | 2.6 | 1.3 |
| Absolute minimum temperature (°C) | -8.6 | -10.2 | -8.0 | -2.6 | 3.7 | 10.2 | 15.3 | 11.9 | 10.9 | -3.9 | -8.5 | -7.0 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 3.8 | 7.2 | 7.0 | 8.6 | 10.3 | 10.6 | 11.5 | 11.2 | 10.0 | 7.2 | 7.7 | 4.3 |
| Precipitation (mm) | 132 | 54 | 168 | 80 | 70 | 53 | 120 | 99 | 31 | 81 | 24 | 45 |
| Sunny days | 9 | 16 | 16 | 14 | 18 | 16 | 9 | 16 | 20 | 18 | 24 | 13 |
| Rainy days | 18 | 12 | 12 | 16 | 13 | 14 | 22 | 15 | 10 | 13 | 6 | 17 |
| Snow days | 4 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Saint Omer during the most sunny months:
The largest precipitation sum in Saint Omer is at