Zonneschijn — 2020
| Monat | Haarlem | Heemstede | Unterschied |
|---|---|---|---|
| Jan | 145.4 uren | 147.4 uren | -2.0 |
| Feb | 184.7 uren | 185.3 uren | -0.6 |
| Mär | 304.3 uren | 303.5 uren | +0.8 |
| Apr | 367.6 uren | 367.2 uren | +0.4 |
| Mai | 430.9 uren | 430.2 uren | +0.7 |
| Jun | 426.9 uren | 426.2 uren | +0.7 |
| Jul | 414.5 uren | 417.4 uren | -2.9 |
| Aug | – | – | – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dez | – | – | – |