| Month: Apr 2009 | ||||
| Date | Rain acc | Rain mm | Comment | Mean 1960-1990 |
| 1 | 0 | 0 | 1.9 | |
| 2 | 0 | 0 | 3.7 | |
| 3 | 0.2 | 0.2 | 5.6 | |
| 4 | 5 | 4.8 | 7.5 | |
| 5 | 5.2 | 0.2 | 9.3 | |
| 6 | 9.2 | 4 | 11.2 | |
| 7 | 11.6 | 2.4 | 13.1 | |
| 8 | 13.4 | 1.8 | 14.9 | |
| 9 | 15.8 | 2.4 | 16.8 | |
| 10 | 16.6 | 0.8 | 18.7 | |
| 11 | 16.8 | 0.2 | 20.5 | |
| 12 | 16.8 | 0 | 22.4 | |
| 13 | 16.8 | 0 | 24.3 | |
| 14 | 19.2 | 2.4 | 26.1 | |
| 15 | 19.2 | 0 | 28.0 | |
| 16 | 19.4 | 0.2 | 29.9 | |
| 17 | 19.6 | 0.2 | 31.7 | |
| 18 | 20.1 | 0.5 | 33.6 | |
| 19 | 20.1 | 0 | 35.5 | |
| 20 | 20.1 | 0 | 37.3 | |
| 21 | 20.1 | 0 | 39.2 | |
| 22 | 20.1 | 0 | 41.1 | |
| 23 | 20.1 | 0 | 42.9 | |
| 24 | 20.1 | 0 | 44.8 | |
| 25 | 25.9 | 5.8 | 46.7 | |
| 26 | 27.2 | 1.3 | 48.5 | |
| 27 | 41.3 | 14.1 | 50.4 | |
| 28 | 41.5 | 0.2 | 52.3 | |
| 29 | 42.3 | 0.8 | 54.1 | |
| 30 | 49.2 | 6.9 | 56.0 | |
| 31 | 49.2 | |||