Neerslag — 2026
| Mois | Zoeterwoude | Leiden | Différence |
|---|---|---|---|
| Jan | – | 87.4 mm | – |
| Fév | – | 68.7 mm | – |
| Mar | 5.6 mm | 41.8 mm | -36.2 |
| Avr | 3.4 mm | 3.7 mm | -0.3 |
| Mai | 51.3 mm | 39.4 mm | +11.9 |
| Juin | 74.9 mm | 73 mm | +1.9 |
| Juil | 7.3 mm | 9.2 mm | -1.9 |
| Aoû |
| – |
| – |
| – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Déc | – | – | – |