A Super El Niño officially began in the first week of June 2026 [1], signaling a period of atypical winter weather for Brazil.
This rapid strengthening of the climate phenomenon is significant because it alters traditional thermal patterns, potentially disrupting agriculture and increasing the risk of environmental disasters in sensitive biomes.
Forecasters expect the first major cold wave to hit between June 22 and June 30, 2026 [1]. This early arrival of cold air is a direct result of thermal anomalies created by the intensifying phenomenon. In central Brazil, current thermal anomalies are already measured at approximately 0.5 °C [2].
While the phenomenon brings early cold, its impact varies by region. In the South, the persistence of cold temperatures is expected to decrease due to more frequent rainfall [1], [3]. This shift creates a volatile weather pattern where cold fronts are interrupted by precipitation.
The Pantanal region is also preparing for the effects of the Super El Niño [3]. Local authorities are implementing specific actions to combat fires, as the phenomenon can shift moisture levels and increase vulnerability to blazes in the wetlands.
There is some variation in the timing of the event's peak intensity. While some reports indicate the phenomenon has already begun [1], other data suggests the Super El Niño could reach its full status as a "super event" between the end of 2026 and the beginning of 2027 [2]. Regardless of the peak timing, the temperature anomalies may eventually reach 2 °C [2].
These shifts in temperature and rain are expected to persist throughout the early winter season, which spans from June through August 2026 [2].
“The Super El Niño officially began in the first week of June 2026.”
The emergence of a Super El Niño creates a high-volatility environment for Brazil's climate. By shifting the timing of cold waves and altering rainfall in the South, the phenomenon threatens to destabilize crop cycles and increase the risk of wildfires in the Pantanal. The potential for a 2 °C anomaly suggests a severe event that could lead to prolonged environmental stress across the continent.
