Temperatuur — 2009
| Month | Sint-Gillis-Waas | Sint-Niklaas | Difference |
|---|---|---|---|
| Jan | 0.9 °C | – | – |
| Feb | 3.4 °C | – | – |
| Mar | 6.5 °C | – | – |
| Apr | 11.8 °C | – | – |
| May | 14 °C | – | – |
| Jun | 15.8 °C | – | – |
| Jul | 18.3 °C | – | – |
| Aug | 19.1 °C | – | – |
| Sep |
| 16.1 °C |
| – |
| – |
| Oct | 11.8 °C | – | – |
| Nov | 9.7 °C | – | – |
| Dec | 2.8 °C | – | – |