Bewolking — 2026
| Month | Maassluis | Midden-Delfland | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 60.1 % | 58.4 % | +1.7 |
| Apr | 80.7 % | 81.9 % | -1.2 |
| May | 57.1 % | 57.1 % | +0.0 |
| Jun | 59.8 % | 59.8 % | +0.0 |
| Jul | 47.8 % | 47.8 % | +0.0 |
| Aug |
| 53.1 % |
| 53.1 % |
| +0.0 |
| Sep | 73.8 % | 73.2 % | +0.6 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |