Temperatuur — 2026
| Mois | Maassluis | Vlaardingen | Différence |
|---|---|---|---|
| Jan | – | 3.2 °C | – |
| Fév | – | 6.1 °C | – |
| Mar | 7.8 °C | 8.9 °C | -1.1 |
| Avr | 9.4 °C | 10.2 °C | -0.8 |
| Mai | 14.4 °C | 14.4 °C | +0.0 |
| Juin | 18.4 °C | 18.4 °C | +0.0 |
| Juil | 19.7 °C | 19.7 °C | +0.0 |
| Aoû |
| 19.5 °C |
| 19.5 °C |
| +0.0 |
| Sep | 17.7 °C | 18.3 °C | -0.6 |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |