Neerslag — 2025
| Maand | Alphen aan den Rijn | Waddinxveen | Verschil |
|---|---|---|---|
| Jan | 91.9 mm | 98.5 mm | -6.6 |
| Feb | 40.4 mm | 39 mm | +1.4 |
| Mrt | 7.8 mm | 6.5 mm | +1.3 |
| Apr | 39.8 mm | 36.4 mm | +3.4 |
| Mei | 60.3 mm | 51.6 mm | +8.7 |
| Jun | 63.7 mm | 62.6 mm | +1.1 |
| Jul | 93.1 mm | 92.1 mm | +1.0 |
| Aug |
| 45.8 mm |
| 39.4 mm |
| +6.4 |
| Sep | 56.4 mm | 60.5 mm | -4.1 |
| Okt | 142.5 mm | 142.1 mm | +0.4 |
| Nov | 80.6 mm | 78.3 mm | +2.3 |
| Dec | 23.3 mm | 24.3 mm | -1.0 |