Best Time to Visit Grande-Synthe: Month-by-Month Guide
Best months for Grande-Synthe: July, August, June, September.
- Best months for Grande-Synthe: July, August, June, September.
- Peak season is August, July, June. Expect higher prices and more visitors (estimated from the climate, not from visitor counts).
- Shoulder season: September. Good weather without the busiest period.
- Wettest months: December, November, October.
- The least pleasant month is December (score 5.1).
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 7°C | 3°C | 56 mm | 11 | – | – | 5.2 |
| February | 8°C | 3°C | 47 mm | 10 | – | – | 5.4 |
| March | 10°C | 5°C | 46 mm | 11 | – | – | 5.8 |
| April | 13°C | 7°C | 44 mm | 10 | – | – | 6.3 |
| May | 16°C | 10°C | 54 mm | 11 | – | – | 6.8 |
| June | 19°C | 12°C | 54 mm | 10 | – | – | 7.3 |
| July | 22°C | 14°C | 54 mm | 10 | – | – | 7.6 |
| August | 22°C | 15°C | 63 mm | 11 | – | – | 7.6 |
| September | 19°C | 12°C | 55 mm | 10 | – | – | 7.3 |
| October | 15°C | 9°C | 65 mm | 12 | – | – | 6.3 |
| November | 11°C | 6°C | 65 mm | 12 | – | – | 5.6 |
| December | 8°C | 4°C | 68 mm | 12 | – | – | 5.1 |
Frequently asked questions
When is the best time to visit Grande-Synthe?
The best months are July, August, June, September.
When is the rainy season in Grande-Synthe?
The wettest months are December, November, October.