The U.S. Climate Prediction Center and the National Oceanic and Atmospheric Administration forecast that El Niño will intensify through late 2026.

This intensification could trigger severe weather patterns globally, altering rainfall and temperature norms in regions including Brazil. Because the phenomenon influences global jet streams, a high-intensity event often leads to agricultural disruptions and extreme weather events across multiple continents.

Climate agencies said the onset of El Niño was confirmed on June 11, 2026 [4]. Current data suggests the event is driven by rising sea-surface temperature anomalies, the Madden-Julian Oscillation, and a developing Kelvin wave.

Forecasters expect the phenomenon to reach its peak intensity between October and December 2026. There is an 81% chance that El Niño will reach a very strong intensity during this window [2]. Some projections suggest the event may evolve further into a Super El Niño, characterized by historically high levels of ocean warming.

Numerical models indicate a projected sea-surface temperature anomaly above 2.5 °C in the equatorial Pacific [3]. Such a threshold marks the event as potentially historic in scale.

Experts said the warming trend will persist well beyond the calendar year. There is a 97% probability that El Niño will continue into the early spring of 2027 in the Northern Hemisphere [1].

These projections rely on the interaction of atmospheric and oceanic pressures in the Pacific. The persistence of these anomalies suggests a prolonged period of climatic instability for the affected regions.

“There is an 81% chance that El Niño will reach a very strong intensity between October and December 2026.”

A Super El Niño event represents a rare climatic extreme that can disrupt global food security and water management. By pushing sea-surface temperatures above 2.5 °C, the Pacific Ocean releases massive amounts of heat into the atmosphere, which typically shifts storm tracks and can cause devastating droughts in some regions while triggering catastrophic flooding in others.