Abstract: The Oltenia Plain and the Southern Dobroudja Plateau are two regions located in the two southern extremities, namely the south-western and the south-eastern extremities of Romania, which display distinct climatic features imposed by multiple climatic influences. The climatic evolution, especially in the last three decades, and the regional manifestations of the climatic phenomena related to global warming induced significant changes within the mentioned regions. In this context, we mention the pluviometric deficit. In the present paper, we have analysed the pluviometric deficit (annual and the warm semester of the year) within the Oltenia Plain and the Southern Dobroudja Plateau registered in the last half of the century (starting with 1961). We made a comparative analysis. The significant differences clearly emphasize the aridization tendency of the regional climate. The paper is useful for climatologists, as well as for students, master and PhD students.