Temperatuur — 2026
| Monat | Westland | Maassluis | Unterschied |
|---|---|---|---|
| Jan | 3.1 °C | – | – |
| Feb | 5.9 °C | – | – |
| Mär | 8.6 °C | 7.8 °C | +0.8 |
| Apr | 9.7 °C | 9.4 °C | +0.3 |
| Mai | 14.4 °C | 14.4 °C | +0.0 |
| Jun | 18.4 °C | 18.4 °C | +0.0 |
| Jul | 19.9 °C | 19.8 °C | +0.1 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dez | – | – | – |