Porthleven
| Dg | Dl | Dm | Dc | Dj | Dv | Ds | Dg | |
|---|---|---|---|---|---|---|---|---|
| Vent |  | | | | | | | |
| Direcció | | | | | | | | |
| Mitjana (kn) | 21 | 27 | 10 | 10 | 22 | 24 | 20 | 12 |
| Ràfega (kn) | 26 | 31 | 12 | 14 | 26 | 30 | 30 | 18 |
| Onades | | | | | | | | |
| Direcció | | | | | | | | |
| Alçada (m) | 5.2 | 4.4 | 2.7 | 2 | 2.1 | 3.4 | 2.8 | 3.6 |
| Període (s) | 12 | 11 | 10 | 9 | 8 | 16 | 13 | 12 |
| Temp. | 11 | 11 | 10 | 9 | 10 | 11 | 12 | 13 |
| Núvols | 100 | 42 | 87 | 100 | 100 | 100 | 99 | 94 |
| Pluja | 9.9 | 0.3 | 0.4 | 0.1 | 1.7 | 0.1 |