| Period | Total (mm) | Mean | Ranking n=102 | Percentile |
|---|---|---|---|---|
| Jan | 802.6 | 604.8 | 29 | 28.4 |
| Feb | 1344.3 | 728.1 | 10 | 9.8 |
| Mar | 846.5 | 748.6 | 36 | 35.3 |
| Apr | 248.4 | 523.8 | 84 | 82.4 |
| May | 395.1 | 330.3 | 41 | 40.2 |
| Jun | 175.1 | 197.2 | 54 | 52.9 |
| Jul | 134.7 | 155.4 | 54 | 52.9 |
| Aug | 83.5 | 127.6 | 55 | 53.9 |
| Sep* | 22.2 | 63.1 | 64 | 62.7 |
| Year* | 4052.4 | 3478.8 | 22 | 21.6 |