Wind — 2020
| Month | Midden-Delfland | Maassluis | Difference |
|---|---|---|---|
| Jan | 21.6 km/h | 21.6 km/h | +0.0 |
| Feb | 30 km/h | 30 km/h | +0.0 |
| Mar | 21.9 km/h | 21.9 km/h | +0.0 |
| Apr | 15.4 km/h | 15.4 km/h | +0.0 |
| May | 16.2 km/h | 16.2 km/h | +0.0 |
| Jun | 16.1 km/h | 16.1 km/h | +0.0 |
| Jul | 16.7 km/h | 16.7 km/h | +0.0 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |