| Rainfall | |||||
| Year | Average | Year | Average | Year | Average |
| 1971 | 45.50 | 1985 | 59.37 | 1999 | 38.43 |
| 1972 | 52.75 | 1986 | 17.11 | 2000 | 56.53 |
| 1973 | 20.26 | 1987 | 38.80 | 2001 | 50.57 |
| 1974 | 34.62 | 1988 | 56.10 | 2002 | 54.50 |
| 1975 | 70.17 | 1989 | 63.60 | 2003 | 46.21 |
| 1976 | 21.37 | 1990 | 20.82 | 2004 | 18.13 |
| 1977 | 47.57 | 1991 | 76.03 | 2005 | 30.61 |
| 1978 | 63.88 | 1992 | 146.35 | 2006 | 19.43 |
| 1979 | 93.32 | 1993 | 40.98 | 2007 | 20.00 |
| 1980 | 23.77 | 1994 | 29.47 | 2008 | 37.71 |
| 1981 | 22.16 | 1995 | 90.71 | 2009 | 50.59 |
| 1982 | 38.65 | 1996 | 92.44 | 2010 | 40.95 |
| 1983 | 2.93 | 1997 | 81.23 | 2011 | 110.50 |
| 1984 | 37.58 | 1998 | 38.80 | 2012 | 14.00 |