Harlech
| Wo | Do | Vr | Za | Zo | Ma | Di | Wo | |
|---|---|---|---|---|---|---|---|---|
| Wind |  | | | | | | | |
| Richting | | | | | | | | |
| Gemiddelde (kn) | 11 | 9 | 5 | 10 | 6 | 9 | 11 | 15 |
| Windstoot (kn) | 15 | 10 | 5 | 10 | 6 | 12 | 12 | 14 |
| Golven | | | | | | | | |
| Richting | | | | | | | | |
| Golfhoogte (m) | 0.6 | 0.5 | 0.4 | 0.5 | 0.4 | 0.3 | 0.4 | 0.3 |
| Periode (s) | 5 | 5 | 5 | 4 | 3 | 8 | 7 | 3 |
| Temp. | 17 | 15 | 15 | 15 | 14 | 18 | 16 | 15 |
| Wolken | 100 | 28 | 88 | 100 | 76 | 35 | ||
| Regen | 0.4 | 0.1 | 0.1 |