SUMMARY
West Africa in general and Ivory Coast in particular has experienced climate change issues for almost five decades. These climate changes affect several areas. The essential question that this study raises is therefore the following: have the climatic zones previously defined at the level of the Ivory Coast undergone modifications under the influence of climate change? Thus, the aim of this study is to analyze the impact of climate change on climate regionalization in Ivory Coast. As a result, monthly rain data collected over the 1961-2016 period was used. These data come from the national network of meteorological measurements of the Ivory Coast. A sample of 47 weather stations with data for the 1961-2016 period was used. The methodology is based on the combination of multivariate statistical approaches, namely principal component analysis (PCA) and ascending hierarchical classification (AHC). Fourteen (14) variables composed of annual rain, quarterly cumulative monthly rain and geographic coordinates (longitude, latitude, altitude) were used. The main results obtained made it possible to identify six (6) homogeneous climatic regions, unlike previous work which highlighted three (3) to five (5) homogeneous climatic zones. It has been noted that the climate zoning of Ivory Coast has undergone changes under the influence of climate change.