Temperatuur — 2026
| Maand | Hillegom | Lisse | Verschil |
|---|---|---|---|
| Jan | 2.9 °C | – | – |
| Feb | 5.7 °C | – | – |
| Mrt | 8.2 °C | 8.4 °C | -0.2 |
| Apr | 9.6 °C | 9.9 °C | -0.3 |
| Mei | 13.8 °C | 13.8 °C | +0.0 |
| Jun | 18 °C | 18 °C | +0.0 |
| Jul | 19.3 °C | 19.3 °C | +0.0 |
| Aug |
| 19.3 °C |
| 19.3 °C |
| +0.0 |
| Sep | 17.3 °C | 17.3 °C | +0.0 |
| Okt | 13.5 °C | 13.5 °C | +0.0 |
| Nov | – | – | – |
| Dec | – | – | – |