Temperatuur — 2020
| Maand | Voorne aan Zee | Nissewaard | Verschil |
|---|---|---|---|
| Jan | 6.7 °C | 6.5 °C | +0.2 |
| Feb | 7.5 °C | 7.4 °C | +0.1 |
| Mrt | 7.1 °C | 7.1 °C | +0.0 |
| Apr | 11.1 °C | 11.2 °C | -0.1 |
| Mei | 13.4 °C | 13.5 °C | -0.1 |
| Jun | 17 °C | 17.3 °C | -0.3 |
| Jul | 17.4 °C | 17.3 °C | +0.1 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |