Average annual temperature is 11.7 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -9.8 °C
Number of sunny days: 129 days
Number of rainy days: 227 days
Number of snow days: 9 days
Look at detailed online map of Saint-Hélier
* Weather data for Saint-Hélier 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) | 14.1 | 14.6 | 18.8 | 19.7 | 24.5 | 28.6 | 33.6 | 32.4 | 31.2 | 27.6 | 14.1 | 11.3 |
| Average daytime temperature (°C) | 5.1 | 8.0 | 10.6 | 12.1 | 18.1 | 24.7 | 24.0 | 23.8 | 24.6 | 18.4 | 8.8 | 7.0 |
| Average temperature (°C) | 3.1 | 4.2 | 6.8 | 8.2 | 13.8 | 20.0 | 19.3 | 19.3 | 19.5 | 14.1 | 6.4 | 4.9 |
| Average night temperature (°C) | 0.5 | 1.2 | 3.2 | 4.5 | 9.5 | 15.1 | 14.8 | 15.4 | 15.0 | 10.6 | 4.1 | 2.8 |
| Absolute minimum temperature (°C) | -9.8 | -3.9 | -3.9 | -1.0 | 5.3 | 12.1 | 10.8 | 8.7 | 8.1 | 4.4 | -3.3 | -5.5 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.0 | 10.3 | 11.9 | 13.6 | 15.1 | 15.9 | 15.5 | 14.2 | 12.6 | 10.9 | 9.3 | 8.5 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.5 | 6.2 | 6.7 | 7.7 | 10.6 | 13.3 | 11.8 | 9.9 | 10.5 | 6.7 | 3.4 | 2.2 |
| Precipitation (mm) | 65 | 16 | 107 | 69 | 53 | 56 | 75 | 66 | 19 | 161 | 120 | 108 |
| Sunny days | 8 | 15 | 8 | 9 | 10 | 16 | 12 | 8 | 18 | 14 | 2 | 9 |
| Rainy days | 16 | 12 | 22 | 21 | 21 | 14 | 19 | 23 | 12 | 17 | 28 | 22 |
| Snow days | 7 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Saint-Hélier during the most sunny months:
Months with the longest average daylight duration in Saint-Hélier:
The largest precipitation sum in Saint-Hélier is at