Wind — 2020
| Month | Harlingen | Vlieland | Difference |
|---|---|---|---|
| Jan | 32.3 km/h | 33.9 km/h | -1.6 |
| Feb | 40.5 km/h | 42.5 km/h | -2.0 |
| Mar | 30.3 km/h | 32 km/h | -1.7 |
| Apr | 22.9 km/h | 24.1 km/h | -1.2 |
| May | 22.2 km/h | 22.8 km/h | -0.6 |
| Jun | 22.5 km/h | 23.4 km/h | -0.9 |
| Jul | 23.8 km/h | 24.8 km/h | -1.0 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |