The Republic of Guinea has a humid tropical climate, characterized by a dry season influenced by the harmattan and a rainy season influenced by the West African monsoon, with an average annual rainfall of 1835 mm. In its southern part, rainfall events are intense due to the early arrival and late retreat of the Inter-Tropical Convergence Zone (ITCZ). This study examines statistical indicators of the spatio-temporal variability of rainfall in the forest region (south) of the Republic of Guinea. The methodological approach adopted revolves around the collection and processing of data and the analysis of results. The data used are provided by the Agency National of Meteorology (ANM), covering a period from 1994 to 2023, and come from four (4) synoptic meteorological stations in Guinea Forester. Our results show that, since 1994, Forester Guinea has experienced rainfall variability marked by alternating rainfall heights with variations linked to altitude. We found that average monthly rainfall varies from station to station: 151.6 mm and 165.1 mm for Beyla and N’Zérékoré stations, 182.7 mm and 188.8 mm for Macenta and Yomou stations. Annual rainfall averages between 1800 and 2300 mm, depending on the location.
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