Temperatuur — 2026
| Mois | Schiedam | Midden-Delfland | Différence |
|---|---|---|---|
| Jan | – | – | – |
| Fév | – | – | – |
| Mar | 8.2 °C | 7.5 °C | +0.7 |
| Avr | 10.1 °C | 9.1 °C | +1.0 |
| Mai | 14.5 °C | 14.4 °C | +0.1 |
| Juin | 18.8 °C | 18.4 °C | +0.4 |
| Juil | 19.8 °C | 19.7 °C | +0.1 |
| Aoû |
| 19.3 °C |
| 19.5 °C |
| -0.2 |
| Sep | 18 °C | 17.3 °C | +0.7 |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |