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Botswana - National rainfall index

430.4 (mm) in 1999

In 1999, rainfall index for Botswana was 430.4 mm. Though Botswana rainfall index fluctuated substantially in recent years, it tended to decrease through 1971 - 1999 period ending at 430.4 mm in 1999.

The description is composed by our digital data assistant.

What is rainfall index?

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

What is Botswana rainfall index?

Date Value Change, %
1999 430.4 32.02 %
1994 326.0 -16.82 %
1990 391.9 25.29 %
1986 312.8 -27.31 %
1980 430.3 -19.36 %
1976 533.6 30.50 %
1971 408.9 1.69 %
1966 402.1

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