Saint-Efflam
| Wo | Do | Vr | Za | Zo | Ma | Di | Wo | |
|---|---|---|---|---|---|---|---|---|
| Wind |  | | | | | | | |
| Richting | | | | | | | | |
| Gemiddelde (kn) | 11 | 20 | 22 | 9 | 22 | 16 | 8 | 12 |
| Windstoot (kn) | 18 | 34 | 40 | 16 | 38 | 22 | 15 | 24 |
| Golven | | | | | | | | |
| Richting | | | | | | | | |
| Golfhoogte (m) | 2.3 | 2.6 | 4 | 3.1 | 3.8 | 3.9 | 2.8 | 2.4 |
| Periode (s) | 16 | 13 | 17 | 15 | 13 | 16 | 14 | 12 |
| Temp. | 13 | 13 | 14 | 9 | 11 | 12 | 7 | 7 |
| Wolken | 60 | 100 | 99 | 64 | 100 | 71 | 88 | 78 |
| Regen | 0.1 | 0.5 | 0.1 | 1.1 | 0.1 | 0.8 |