Neerslag — 2026
| Maand | Voorschoten | Leiden | Verschil |
|---|---|---|---|
| Jan | – | 87.4 mm | – |
| Feb | – | 68.7 mm | – |
| Mrt | 3.6 mm | 41.8 mm | -38.2 |
| Apr | 3.7 mm | 3.7 mm | +0.0 |
| Mei | 51.3 mm | 39.4 mm | +11.9 |
| Jun | 74.9 mm | 73 mm | +1.9 |
| Jul | 14.7 mm | 14.6 mm | +0.1 |
| Aug |
| 60.3 mm |
| 81 mm |
| -20.7 |
| Sep | 70.3 mm | 93.2 mm | -22.9 |
| Okt | 93.3 mm | 126.8 mm | -33.5 |
| Nov | – | – | – |
| Dec | – | – | – |