The aim of this study is to analyze the manifestation of rainfall variability in the district
of Zanzan level during El Niño episodes and to evaluate its agro-climatic impacts. SODEXAM
climate data and Sea Surface Temperature (SST) of El Niño 3.4 area were used. The composite
analysis made it possible to evaluate the impacts of the El Niño phenomenon on rainfall. INSTAT+
v3.30 software was used for the analysis of agro-climatic events. The results indicated average rainfall
deficits from 10 to 44% in the district from October to April. Rainfall patterns are disrupted in the
El Niño year. Crops seasons are late and end early in Bondoukou, Bouna and Tanda. This
disturbance affects agro-climatic events by shortening the growing season in the Zanzan on average
21 days in El Niño year.