Neerslag — 2023
| Maand | Alphen aan den Rijn | Waddinxveen | Verschil |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mrt | 0 mm | 0 mm | +0.0 |
| Apr | 91.9 mm | 85.9 mm | +6.0 |
| Mei | 77.9 mm | 77.4 mm | +0.5 |
| Jun | 15 mm | 16.5 mm | -1.5 |
| Jul | 130.3 mm | 120 mm | +10.3 |
| Aug |
| 89 mm |
| 90.3 mm |
| -1.3 |
| Sep | 84.2 mm | 81 mm | +3.2 |
| Okt | 165 mm | 172.9 mm | -7.9 |
| Nov | 166 mm | 149.9 mm | +16.1 |
| Dec | 124.8 mm | 122.6 mm | +2.2 |