Wind — 2026
| Month | Midden-Delfland | Vlaardingen | Difference |
|---|---|---|---|
| Jan | – | 12.2 km/h | – |
| Feb | – | 14 km/h | – |
| Mar | 20.7 km/h | 12.4 km/h | +8.3 |
| Apr | 15.9 km/h | 16.1 km/h | -0.2 |
| May | 14.8 km/h | 14.8 km/h | +0.0 |
| Jun | 16.7 km/h | 16.7 km/h | +0.0 |
| Jul | 15.7 km/h | 15.7 km/h | +0.0 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |