Average annual temperature is 11.9 °C
Absolute maximum temperature: 31.2 °C
Absolute minimum temperature: -4.2 °C
Number of sunny days: 128 days
Number of rainy days: 237 days
Look at detailed online map of Helfaut
* Weather data for Helfaut 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) | 14.0 | 12.1 | 16.8 | 16.2 | 22.3 | 30.5 | 28.7 | 26.0 | 31.2 | 25.6 | 15.0 | 13.0 |
| Average daytime temperature (°C) | 8.1 | 8.9 | 10.5 | 12.3 | 16.6 | 23.4 | 21.5 | 21.2 | 23.0 | 17.0 | 10.7 | 9.5 |
| Average temperature (°C) | 5.9 | 5.9 | 7.5 | 8.4 | 12.4 | 18.3 | 18.0 | 17.6 | 18.5 | 13.9 | 8.5 | 7.6 |
| Average night temperature (°C) | 3.7 | 3.0 | 4.5 | 4.2 | 8.2 | 13.3 | 14.5 | 13.9 | 14.2 | 11.1 | 6.4 | 5.5 |
| Absolute minimum temperature (°C) | -3.4 | -4.2 | -2.1 | -1.8 | 2.8 | 9.9 | 11.9 | 11.1 | 10.3 | 4.1 | -2.1 | -4.2 |
| 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) | 8.5 | 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) | 3.8 | 4.7 | 5.1 | 8.3 | 11.1 | 12.9 | 11.2 | 11.0 | 8.9 | 6.1 | 3.5 | 2.5 |
| Precipitation (mm) | 101 | 10 | 161 | 73 | 43 | 18 | 82 | 109 | 49 | 130 | 171 | 96 |
| Sunny days | 10 | 17 | 4 | 8 | 15 | 22 | 4 | 9 | 17 | 10 | 5 | 7 |
| Rainy days | 21 | 11 | 27 | 22 | 16 | 8 | 27 | 22 | 13 | 21 | 25 | 24 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Helfaut during the most sunny months:
Months with the longest average daylight duration in Helfaut:
The largest precipitation sum in Helfaut is at