Temperatuur — 2026
| Monat | Vlaardingen | Schiedam | Unterschied |
|---|---|---|---|
| Jan | 3.2 °C | – | – |
| Feb | 6.1 °C | – | – |
| Mär | 8.9 °C | 8.2 °C | +0.7 |
| Apr | 10.2 °C | 10.1 °C | +0.1 |
| Mai | 14.4 °C | 14.5 °C | -0.1 |
| Jun | 18.4 °C | 18.8 °C | -0.4 |
| Jul | 20.1 °C | 20.2 °C | -0.1 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dez | – | – | – |