| Period | Total (mm) | Mean | Ranking n=103 | Percentile |
|---|---|---|---|---|
| Jan | 641.9 | 605.2 | 39 | 37.9 |
| Feb | 495.6 | 725.8 | 73 | 70.9 |
| Mar | 859.5 | 749.7 | 36 | 35.0 |
| Apr | 334.2 | 522.0 | 75 | 72.8 |
| May | 281.3 | 329.8 | 63 | 61.2 |
| Jun | 404.0 | 199.2 | 11 | 10.7 |
| Jul | 188.4 | 155.7 | 34 | 33.0 |
| Aug | 188.6 | 128.1 | 31 | 30.1 |
| Sep* | 62.0 | 89.4 | 50 | 48.5 |
| Year* | 3455.5 | 3504.9 | 51 | 49.5 |