Neerslag — 2020
| Month | Harlingen | Vlieland | Difference |
|---|---|---|---|
| Jan | 84.1 mm | 83 mm | +1.1 |
| Feb | 139.2 mm | 133.8 mm | +5.4 |
| Mar | 33.2 mm | 29.3 mm | +3.9 |
| Apr | 17.7 mm | 16 mm | +1.7 |
| May | 20.2 mm | 15 mm | +5.2 |
| Jun | 76.8 mm | 63 mm | +13.8 |
| Jul | 96.9 mm | 84 mm | +12.9 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |