Bewolking — 2026
| Maand | Heemstede | Hillegom | Verschil |
|---|---|---|---|
| Jan | – | 80.8 % | – |
| Feb | – | 79.4 % | – |
| Mrt | 51.8 % | 55 % | -3.2 |
| Apr | 78.2 % | 77.2 % | +1.0 |
| Mei | 57.7 % | 57.7 % | +0.0 |
| Jun | 59.4 % | 59.4 % | +0.0 |
| Jul | 49.8 % | 49.8 % | +0.0 |
| Aug |
| 52.1 % |
| 52.1 % |
| +0.0 |
| Sep | 69.9 % | 70.5 % | -0.6 |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |