Temperatuur — 2023
| Monat | Rotterdam | Lansingerland | Unterschied |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mär | 9.1 °C | 9.1 °C | +0.0 |
| Apr | 8.5 °C | 8.4 °C | +0.1 |
| Mai | 12.9 °C | 12.8 °C | +0.1 |
| Jun | 19.2 °C | 18.9 °C | +0.3 |
| Jul | 18.2 °C | 18.1 °C | +0.1 |
| Aug |
| 17.7 °C |
| 17.6 °C |
| +0.1 |
| Sep | 18.2 °C | 18.1 °C | +0.1 |
| Okt | 13.7 °C | 13.7 °C | +0.0 |
| Nov | 8.1 °C | 8.1 °C | +0.0 |
| Dez | 6.8 °C | 6.8 °C | +0.0 |