The research in question was carried out in the southwestern portion of Angola, Namibe Province, Moçâmedes Municipality, more specifically in the estuary of the Bero River. It aimed to characterize the sedimentology of the Bero River estuary, and for this purpose sedimentological analyses were carried out to understand the composition, granulometry and distribution of sediments in the studied area. For a better organization, the research was fragmented into 3 stages and the methodology was essentially varied and included a series of laboratory analyses and statistical analyses. The results revealed significant variations in the average particle sizes, with a decreasing trend towards the mouth of the river. In addition, differences in sediment selection were observed between samples, indicating variations in the uniformity of particle sizes throughout the estuary. Regarding the symmetry of the particles, there were variations among the samples, suggesting differences in the distribution and morphology of the sediments. The same results provide information for understanding the dynamics of the estuary and its influence on the coastal environment and contributing to a better understanding of the ecological and geological aspects of the area, in addition to subsidizing actions for the management and conservation of local natural resources.