Bewolking — 2026
| Maand | Westland | Maassluis | Verschil |
|---|---|---|---|
| Jan | 80.1 % | – | – |
| Feb | 81.5 % | – | – |
| Mrt | 57.5 % | 60.1 % | -2.6 |
| Apr | 80.4 % | 80.7 % | -0.3 |
| Mei | 57.1 % | 57.1 % | +0.0 |
| Jun | 59.8 % | 59.8 % | +0.0 |
| Jul | 50 % | 50.1 % | -0.1 |
| Aug |
| 37.7 % |
| 47.5 % |
| -9.8 |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |