Bewolking — 2026
| Month | Kaag en Braassem | Alphen aan den Rijn | Difference |
|---|---|---|---|
| Jan | – | 79.3 % | – |
| Feb | – | 80.7 % | – |
| Mar | 56.5 % | 54.2 % | +2.3 |
| Apr | 75.8 % | 77.6 % | -1.8 |
| May | 59.1 % | 59.9 % | -0.8 |
| Jun | 60.6 % | 62.1 % | -1.5 |
| Jul | 50.6 % | 49.9 % | +0.7 |
| Aug |
| 53.1 % |
| 54.7 % |
| -1.6 |
| Sep | 71.1 % | 72.1 % | -1.0 |
| Oct | 66 % | 66.5 % | -0.5 |
| Nov | – | – | – |
| Dec | – | – | – |