Wind — 2026
| Month | Sliedrecht | Hardinxveld-Giessendam | Difference |
|---|---|---|---|
| Jan | – | 13.5 km/h | – |
| Feb | – | 15.2 km/h | – |
| Mar | 19.7 km/h | 12.5 km/h | +7.2 |
| Apr | 15.3 km/h | 15.9 km/h | -0.6 |
| May | 12.1 km/h | 12.1 km/h | +0.0 |
| Jun | 13.7 km/h | 13.7 km/h | +0.0 |
| Jul | 13.3 km/h | 13.3 km/h | +0.0 |
| Aug |
| 12.7 km/h |
| 12.7 km/h |
| +0.0 |
| Sep | 13.3 km/h | 13.3 km/h | +0.0 |
| Oct | 15.3 km/h | 15.4 km/h | -0.1 |
| Nov | – | – | – |
| Dec | – | – | – |