Luchtvochtigheid — 2026
| Maand | Heemskerk | Castricum | Verschil |
|---|---|---|---|
| Jan | – | 86.7 % | – |
| Feb | – | 87.3 % | – |
| Mrt | 81.6 % | 80 % | +1.6 |
| Apr | 79.3 % | 79.1 % | +0.2 |
| Mei | 75.6 % | 75.6 % | +0.0 |
| Jun | 79.8 % | 79.8 % | +0.0 |
| Jul | 78.3 % | 78.3 % | +0.0 |
| Aug |
| 73.8 % |
| 73.8 % |
| +0.0 |
| Sep | 76.9 % | 77.6 % | -0.7 |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |