Luchtvochtigheid — 2026
| Month | Alphen aan den Rijn | Kaag en Braassem | Difference |
|---|---|---|---|
| Jan | 88.7 % | – | – |
| Feb | 87.5 % | – | – |
| Mar | 79.7 % | 82.2 % | -2.5 |
| Apr | 78.9 % | 79 % | -0.1 |
| May | 71.6 % | 73.6 % | -2.0 |
| Jun | 75.8 % | 77.6 % | -1.8 |
| Jul | 71.9 % | 75.1 % | -3.2 |
| Aug |
| 71 % |
| 72.2 % |
| -1.2 |
| Sep | 81.6 % | 81 % | +0.6 |
| Oct | 85.3 % | 84 % | +1.3 |
| Nov | – | – | – |
| Dec | – | – | – |