Abstract – This work was conducted to identify areas showing lower agroclimatological risks for beans cropping in January and February associated to water deficit, in the State of Rio Grande do Sul, Brazil. The investigation was based on the Beans Crop Agroclimate Zoning in the State of Rio Grande do Sul. A Complementary Risk Index (CRI) was applied to areas suitable for beans cropping determined in the agroclimate zoning. The purpose of such index is to detect those periods showing lower risks of occurring water deficit. CRI is based upon the interaction between water availability and critical development period of beans, as the main factor determining economic yield of beans in the state. The module SARRAZON was used in calculating daily water balance. Water balance simulations were carried out for beans, early and normal cycles, considering the seeding dates on 5, 15, and 25 of each month. A Water Requirement Satisfaction Index (WRSI) associated to beans development subperiod 3 (flowering-grain filling) was used as the main growth indicator. WRSI values were calculated for a minimum frequency of 80% and spatialized through the Geographic Information System SPRING v. 3.4. Three classes were defined: favorable (WRSI > 0.60), intermediate (WRSI between 0.50 and 0.60), and unfavorable (WRSI < 0.50). Seeding periods were established based upon the areas limited by the values in the range showing favorable WRSI.