Saint-Efflam
| We | Th | Fr | Sa | Su | Mo | Tu | We | |
|---|---|---|---|---|---|---|---|---|
| Wind |  | | | | | | | |
| Direction | | | | | | | | |
| Average (kn) | 11 | 20 | 22 | 9 | 22 | 16 | 8 | 12 |
| Gust (kn) | 18 | 34 | 40 | 16 | 38 | 22 | 15 | 24 |
| Waves | | | | | | | | |
| Direction | | | | | | | | |
| Height (m) | 2.3 | 2.6 | 4 | 3.1 | 3.8 | 3.9 | 2.8 | 2.4 |
| Period (s) | 16 | 13 | 17 | 15 | 13 | 16 | 14 | 12 |
| Temp. | 13 | 13 | 14 | 9 | 11 | 12 | 7 | 7 |
| Clouds | 60 | 100 | 99 | 64 | 100 | 71 | 88 | 78 |
| Rain | 0.1 | 0.5 | 0.1 | 1.1 | 0.1 | 0.8 |