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South Africa - National rainfall index

548.3
(mm)
in 1999

Though South Africa rainfall index fluctuated substantially in recent years, it tended to decrease through 1969 - 1999 period ending at 548.3 mm in 1999.

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An indicator, developed by FAO, which represents the quality of the crop growing season. The NRI yearly results take into consideration the precipitation that year, the average precipitation over the period 1986-2000, the seasonality of the main crop-growing season (distinguishing between northern and southern hemispheres), and what areas of the country are wetter. The median of each five year period is provided. Note: due to methodological differences, this variable is not comparable to average precipitation

Date Value Change, %
1999 548.3 -7.51 %
1994 592.8 9.53 %
1990 541.2 2.02 %
1985 530.5 -2.10 %
1980 541.9 -15.29 %
1977 639.7 20.31 %
1969 531.7 1.62 %
1964 523.2