Bewolking — 2020
| Month | Zandvoort | Bloemendaal | Difference |
|---|---|---|---|
| Jan | 78 % | 79 % | -1.0 |
| Feb | 73.4 % | 73.3 % | +0.1 |
| Mar | 52.7 % | 51.4 % | +1.3 |
| Apr | 38.5 % | 39.7 % | -1.2 |
| May | 45.1 % | 43.7 % | +1.4 |
| Jun | 65.3 % | 64.2 % | +1.1 |
| Jul | 61.2 % | 60.4 % | +0.8 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |