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Japan - National rainfall index

1,578.0
(mm)
in 2001

Though Japan rainfall index fluctuated substantially in recent years, it tended to increase through 1970 - 2001 period ending at 1,578 mm in 2001.

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, %
2001 1,578.0 5.76 %
1995 1,492.0 -14.55 %
1990 1,746.0 15.86 %
1987 1,507.0 -5.40 %
1981 1,593.0 2.64 %
1974 1,552.0 0.65 %
1970 1,542.0 -7.61 %
1963 1,669.0