Scientists Warn a Powerful El Niño Could Break Global Heat Records in 2026

A powerful El Niño event may be on the horizon, with experts warning of unusually strong conditions this year. The German Weather Service has flagged clear signals of its development, raising concerns about potential global weather disruptions. This follows the last major El Niño, which peaked between November 2023 and January 2024 as the fifth-strongest on record. El Niño is a natural weather pattern that emerges irregularly, roughly every four years. It disrupts ocean currents in the equatorial Pacific, often weakening trade winds and causing dramatic warming along the coasts of Chile, Peru, and Colombia. Under normal conditions, the temperature difference between the eastern and western Pacific sits at around ten degrees Celsius—but El Niño shrinks this gap, triggering extreme weather worldwide.

The phenomenon’s name dates back centuries, first recorded by Peruvian fishermen in the 17th century. Today, however, its effects are being amplified by climate change. Rising atmospheric CO₂ levels are making El Niño events more intense, more frequent, and more extreme.

Scientists now warn that if another El Niño occurs in 2026, it could push global temperatures to a new record. This follows 2024, already the hottest year on record, with temperatures 1.6 degrees Celsius above pre-industrial levels. The upcoming El Niño could bring severe weather shifts, from floods to droughts, across multiple continents. With climate change strengthening its impact, the event may also accelerate further temperature rises. Authorities and researchers are closely monitoring developments as the likelihood of an unusually strong El Niño grows.