Brazilian federal agencies warn that the El Niño phenomenon will intensify during the second half of 2026 [1].
This intensification threatens the nation's food security and infrastructure by increasing the likelihood of extreme weather events. Because Brazil relies heavily on predictable rainfall for its massive agricultural sector, a "very strong" El Niño can trigger devastating droughts in some regions and catastrophic flooding in others.
The Instituto Nacional de Meteorologia (Inmet) issued the alert in partnership with the Instituto Nacional de Pesquisas Espaciais (Inpe), the Agência Nacional de Águas (Ana), and the Centro Nacional de Monitoramento e Alerta de Desastres Naturais (Cemaden) [1]. These organizations monitor climate patterns to provide early warnings for disaster mitigation.
According to the agencies, the phenomenon is expected to reach a very strong intensity between the spring and the start of summer, specifically from September to December 2026 [1], [2]. This period coincides with critical planting and harvesting cycles for many Brazilian crops.
The agencies said the increased probability of extreme events will affect the entire Brazilian territory [1]. Expected disruptions include intense rainfall, severe droughts, and heatwaves [1], [2].
These climatic shifts are expected to impact agriculture and livestock specifically [2]. In regions like Minas Gerais, the volatility of rainfall patterns can lead to crop failure or reduced livestock productivity due to water scarcity and heat stress [2].
Federal monitors continue to track ocean temperatures to refine the timing of the peak intensity. The coordination between Inmet, Inpe, Ana, and Cemaden aims to provide localized data to help farmers and city planners prepare for the projected volatility [1].
“The phenomenon is expected to reach a very strong intensity between the spring and the start of summer.”
The convergence of four major federal agencies to issue a high-intensity warning suggests a significant risk to Brazil's GDP, as the projected peak occurs during the critical September-December window. A 'very strong' El Niño typically disrupts the South American Monsoon, potentially leading to water shortages in the north and excessive precipitation in the south, which complicates national logistics and food price stability.
