Harlech
| To | Pe | La | Su | Ma | Ti | Ke | To | |
|---|---|---|---|---|---|---|---|---|
| Tuuli |  | | | | | | | |
| Suunta | | | | | | | | |
| Keskiarvo (kn) | 14 | 20 | 9 | 11 | 18 | 18 | 15 | 11 |
| Puuska (kn) | 19 | 29 | 10 | 13 | 25 | 25 | 16 | 12 |
| Aallot | | | | | | | | |
| Suunta | | | | | | | | |
| Korkeus (m) | 1.1 | 1.6 | 0.9 | 0.3 | 0.8 | 0.8 | 0.7 | 0.2 |
| Ajanjakso (s) | 11 | 8 | 9 | 6 | 5 | 5 | 4 | 4 |
| Lämpö | 15 | 17 | 13 | 14 | 16 | 16 | 13 | 13 |
| Pilvet | 38 | 100 | 90 | 100 | 100 | 100 | 59 | 74 |
| Sade | 0.6 | 0.6 | 1.6 | 1 | 0.6 | 0.1 | 0.1 |