This article focuses on the studying and analyzing the rainfall variability at
Elkhuwei area. The data for rainfall variability was collected from Meteorological
authority-Khartoum for the last four decades. The mean, standard deviation and
coefficient of variation were used to calculate the rainfall variability on long-term
annual basis. The results showed that the rainfall is highly fluctuated and varied
over both space and time. The coefficient of variation for this period is equal to
0.33 and the standard deviation is equal to 114. Two positive and four negative
anomalies were found during the period 1970-2010.