Neerslag — 2020
| Month | Grez-Doiceau | Wavre | Difference |
|---|---|---|---|
| Jan | 35.3 mm | 35.2 mm | +0.1 |
| Feb | 126.8 mm | 123.9 mm | +2.9 |
| Mar | 66.2 mm | 65.9 mm | +0.3 |
| Apr | 26.1 mm | 23.2 mm | +2.9 |
| May | 18.4 mm | 18.1 mm | +0.3 |
| Jun | 75 mm | 68.9 mm | +6.1 |
| Jul | 52.5 mm | 51.1 mm | +1.4 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |