The climatology of the period under analysis indicates rainfall with records varying between 98 and 122 mm being considered normal (reference quantiles 42.5% and 57.5%). On September 30, 2026, 31 mm of average accumulated precipitation was observed over the basin in 30 days, the calculation of the average of the categorized anomaly index in the basin area the value of -2.7, classifies the basin as tendency to extremely dry condition. In the coming weeks, climate behavior indicates a decrease in rainfall volumes, the sub-seasonal forecast model suggests very dry behavior or a tending to be extremely dry.