Decadal precipitation in São Bento Una – Pernambuco, Brazil

The objective is to carry out an analysis of decadal precipitation and its historical comparisons for the municipality of São Bento do Una in the period 1920-2018, which will possibly contribute to the decisions of sectors such as socioeconomic, agriculture, poultry, irrigation, energy production, resources water resources and agricultural technicians and decision makers in the event of extreme winds that may occur. The rainfall data were acquired from the Superintendence of the Development of the Northeast and from the Pernambucana Water and Climate Agency, between the years 1920 to 2016. The statistical simplified calculations were used to define, mean, standard deviation, coefficient of variance, maximum and minimum absolute values ​​occurred, the rainy and dry seasons were defined. The rains registered between decades did not cause great inconvenience to the population, the local economy, except in months where the summer period was extended. The irregularities that occurred in the rainfall in the 1930-1939 decades; 1950-1959 and 2010-2018 were the most prominent in the contributions to livestock farmers for the production of survival agriculture, poultry and water storage in small, medium weirs and cisterns.