El Niño forecast: above-normal rainfall for Argentina Oct-Dec 2026

Argentina's national weather service (SMN) forecasts above-normal rainfall for October-December 2026, driven by El Niño, with highest probability in the Litoral region, western Santa Fe, Córdoba, central-south Cuyo, La Pampa, western Buenos Aires, and northeastern Patagonia. The forecast is a seasonal outlook, not a short-term warning; uncertainty remains on intensity and localized impacts. This matters for agriculture, flood risk, and infrastructure planning in affected areas.