Average annual temperature is 12.0 °C
Absolute maximum temperature: 31.6 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 128 days
Number of rainy days: 237 days
Look at detailed online map of Sailly-sur-la-Lys
* Weather data for Sailly-sur-la-Lys France is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 14.6 | 12.6 | 16.9 | 16.9 | 23.1 | 30.6 | 29.5 | 27.3 | 31.6 | 25.0 | 15.3 | 12.9 |
| Average daytime temperature (°C) | 8.1 | 9.3 | 10.9 | 12.7 | 17.6 | 24.6 | 22.2 | 21.9 | 23.4 | 17.4 | 10.9 | 9.3 |
| Average temperature (°C) | 5.6 | 5.6 | 7.6 | 8.6 | 12.8 | 19.1 | 18.2 | 17.7 | 18.5 | 13.7 | 8.3 | 7.2 |
| Average night temperature (°C) | 2.9 | 2.2 | 4.0 | 4.1 | 8.0 | 13.3 | 14.1 | 13.4 | 13.8 | 10.2 | 5.8 | 4.9 |
| Absolute minimum temperature (°C) | -4.0 | -4.7 | -3.3 | -1.2 | 3.4 | 9.9 | 9.9 | 9.1 | 9.4 | 2.7 | -1.3 | -5.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.6 | 10.0 | 11.9 | 13.8 | 15.5 | 16.4 | 16.0 | 14.5 | 12.6 | 10.7 | 9.0 | 8.1 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 3.6 | 5.0 | 5.1 | 8.0 | 10.7 | 12.9 | 11.1 | 10.9 | 9.0 | 6.3 | 3.7 | 2.3 |
| Precipitation (mm) | 82 | 7 | 145 | 76 | 47 | 69 | 86 | 119 | 52 | 122 | 169 | 78 |
| Sunny days | 9 | 16 | 4 | 8 | 17 | 20 | 5 | 9 | 18 | 10 | 4 | 8 |
| Rainy days | 22 | 12 | 27 | 22 | 14 | 10 | 26 | 22 | 12 | 21 | 26 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sailly-sur-la-Lys during the most sunny months:
Months with the longest average daylight duration in Sailly-sur-la-Lys:
The largest precipitation sum in Sailly-sur-la-Lys is at