| Year | Annual average rainfall (1990-2005) |
| 1990 | 60.79 |
| 1991 | 86.16 |
| 1992 | 89.5 |
| 1993 | 63.43 |
| 1994 | 48.03 |
| 1995 | 67.23 |
| 1996 | 55.46 |
| 1997 | 63.28 |
| 1998 | 65.08 |
| 1999 | 49.57 |
| 2000 | 44.08 |
| 2001 | 69.24 |
| 2002 | 72.98 |
| 2003 | 59.33 |
| 2004 | 76.56 |
| 2005 | 48.56 |