This work aims to study the climate influence on slope stability. The climate is represented by precipitations rate, precipitation duration, and the stability of this unsaturated slope in natural terrain was evaluated based onakey indicator which is "safety factor." The finite elements software (PLAXIS~(2D) version 2015) was used to analyze the stability of the slope. The factors of safety were evaluated by means of fully coupled flow-deformation analyses and were then compared with the various controlling factors: rainfall intensity, rainfall duration, angles and heights of slopes, soil characteristics, and hydraulic conductivity of the soil. The results are discussed in this paper and led to confirm the relationship existing between landslide and climate effects considered in this analysis. In fact, this relation is observed for the most part the north of Algeria instabilities.
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