Gravelines
| Th | Fr | Sa | Su | Mo | Tu | We | Th | |
|---|---|---|---|---|---|---|---|---|
| Wind |  | | | | | | | |
| Direction | | | | | | | | |
| Average (kn) | 18 | 17 | 15 | 15 | 23 | 8 | 11 | 10 |
| Gust (kn) | 32 | 30 | 24 | 23 | 41 | 14 | 13 | 12 |
| Waves | | | | | | | | |
| Direction | | | | | | | | |
| Height (m) | 1.4 | 1.1 | 1 | 1.2 | 2 | 0.6 | 0.6 | 1.9 |
| Period (s) | 5 | 5 | 5 | 5 | 7 | 6 | 3 | 6 |
| Temp. | 12 | 14 | 10 | 12 | 9 | 7 | 9 | 8 |
| Clouds | 100 | 99 | 96 | 31 | 100 | 85 | 11 | 9 |
| Rain | 0.1 | 0.1 | 2.8 |