Neerslag — 2026
| Month | Wassenaar | Katwijk | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 3.5 mm | 6.2 mm | -2.7 |
| Apr | 3.4 mm | 3.4 mm | +0.0 |
| May | 37.7 mm | 39.4 mm | -1.7 |
| Jun | 71.1 mm | 73 mm | -1.9 |
| Jul | 16.5 mm | 14.6 mm | +1.9 |
| Aug |
| 100.7 mm |
| 80.8 mm |
| +19.9 |
| Sep | 45.6 mm | 42 mm | +3.6 |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |