Neerslag — 2026
| Maand | Leiden | Zoeterwoude | Verschil |
|---|---|---|---|
| Jan | 87.4 mm | – | – |
| Feb | 68.7 mm | – | – |
| Mrt | 41.8 mm | 5.6 mm | +36.2 |
| Apr | 3.7 mm | 3.4 mm | +0.3 |
| Mei | 39.4 mm | 51.3 mm | -11.9 |
| Jun | 73 mm | 74.9 mm | -1.9 |
| Jul | 14.6 mm | 14.7 mm | -0.1 |
| Aug |
| 81 mm |
| 60.4 mm |
| +20.6 |
| Sep | 93.2 mm | 70.4 mm | +22.8 |
| Okt | 126.8 mm | 93.1 mm | +33.7 |
| Nov | – | – | – |
| Dec | – | – | – |