Bewolking — 2026
| Month | Voorne aan Zee | Maassluis | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 61.7 % | 60.1 % | +1.6 |
| Apr | 77.5 % | 80.7 % | -3.2 |
| May | 57 % | 57.1 % | -0.1 |
| Jun | 59.5 % | 59.8 % | -0.3 |
| Jul | 45 % | 47.8 % | -2.8 |
| Aug |
| 53.1 % |
| 53.1 % |
| +0.0 |
| Sep | 72.2 % | 72.1 % | +0.1 |
| Oct | 63.8 % | 64.7 % | -0.9 |
| Nov | – | – | – |
| Dec | – | – | – |