Bewolking — 2026
| Month | Midden-Delfland | Maassluis | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 58.4 % | 60.1 % | -1.7 |
| Apr | 81.9 % | 80.7 % | +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 | 72.1 % | 72.1 % | +0.0 |
| Oct | 64.4 % | 64.6 % | -0.2 |
| Nov | – | – | – |
| Dec | – | – | – |