| Average Years | ||||||||||||
| Rainfall mm | ||||||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| 1980 | 0.80 | 13.80 | 0.80 | 0.10 | 0.50 | 0.00 | 0.00 | 0.00 | 0.10 | 4.10 | 2.20 | 7.10 |
| 1984 | 0.10 | 0.10 | 2.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 18.70 | 6.80 | 0.00 |
| 1992 | 2.00 | 1.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 20.00 | 0.00 | 0.00 | 2.40 | 0.70 |
| 1993 | 1.40 | 1.40 | 0.30 | 4.80 | 0.90 | 0.00 | 0.00 | 0.00 | 0.00 | 9.50 | 0.00 | 17.70 |
| 1996 | 0.70 | 0.00 | 1.40 | 0.10 | 0.00 | 0.00 | 1.60 | 1.00 | 1.00 | 0.00 | 12.10 | 4.20 |
| 1997 | 21.10 | 0.10 | 2.50 | 0.00 | 2.80 | 0.00 | 0.00 | 0.00 | 0.00 | 6.60 | 0.00 | 0.30 |
| 1999 | 2.60 | 14.00 | 11.40 | 0.00 | 0.20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 |
| 2000 | 7.60 | 2.50 | 0.00 | 0.00 | 0.20 | 0.00 | 0.20 | 0.00 | 0.00 | 1.10 | 7.70 | 4.00 |
| 2001 | 2.30 | 0.20 | 1.90 | 12.60 | 1.80 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 |
| 2005 | 7.90 | 2.00 | 4.10 | 1.00 | 2.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| 2006 | 0.00 | 6.00 | 8.40 | 0.00 | 5.70 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.10 | 0.00 |
| 2007 | 7.50 | 2.30 | 3.00 | 1.20 | 2.40 | 0.00 | 0.00 | 0.00 | 0.00 | 1.30 | 0.00 | 0.00 |
| 2009 | 0.00 | 1.30 | 0.00 | 0.00 | 23.50 | 8.00 | 0.00 | 0.00 | 0.00 | 0.00 | 4.10 | 0.00 |
| 2012 | 0.10 | 5.30 | 0.10 | 8.50 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 16.80 | 1.10 | 0.00 |
| Total | 54.10 | 50.40 | 36.50 | 28.30 | 40.00 | 8.00 | 1.80 | 21.00 | 1.20 | 58.20 | 36.50 | 34.60 |
| Mean | 3.86 | 3.60 | 2.61 | 2.02 | 2.86 | 0.57 | 0.13 | 1.50 | 0.09 | 4.16 | 2.61 | 2.47 |
| STDEV | 5.76 | 4.73 | 3.40 | 3.92 | 6.15 | 2.14 | 0.43 | 5.33 | 0.27 | 6.47 | 3.78 | 4.90 |
| CV | 1.49 | 1.31 | 1.31 | 1.94 | 2.15 | 3.74 | 3.32 | 3.55 | 3.10 | 1.56 | 1.45 | 1.98 |
| Max | 21.10 | 14.00 | 11.40 | 12.60 | 23.50 | 8.00 | 1.60 | 20.00 | 1.00 | 18.70 | 12.10 | 17.70 |