Record-Breaking Super El Niño Emerges Months Ahead of Peak

The current Super El Niño phenomenon has shattered temperature records months earlier than its typical peak, with scientists warning it may become the strongest in at least 1,000 years. Latest data indicates that the sea surface temperature at the core of the El Niño event is now 3.05°C above the 1991–2020 average, surpassing the previous record of 3.02°C set in November 2015.

Climate scientist Zeke Hausfather noted the early timing of this development, stating in a blog for Carbon Brief that El Niño events usually peak in the winter months. "Every strong El Niño on record has continued to strengthen after mid–September – and there is every reason to think that this one will as well," Hausfather wrote.

El Niño is a natural climate pattern originating in the Pacific Ocean that influences global weather and temporarily elevates global temperatures. The current event began in June and is projected to continue into next year, developing with unprecedented speed.

An alternative measurement used by meteorologists, known as Niño 3.4, tracks the phenomenon using a 30-year rolling average that accounts for human-caused global warming. This metric is also nearing a record high, just one-hundredth of a degree below the 2015 peak. An El Niño event is classified as "very strong" when the Niño 3.4 anomaly exceeds 2.0°C. The current event's anomaly has reached 3.07°C, placing it in a statistical tie with the record from November 18, 2015.

This surge follows a summer that saw global temperatures consistently break records. According to data from the Copernicus Climate Change Service, August 2026 was the warmest August on record, and the average global temperature for the first eight months of the year was 1.22°C above the baseline average.

Since early June, the strength of this El Niño has exceeded that of previous years. In early September of both 1997 and 2015, anomalies were around 1.9°C, more than a degree lower than the current levels. Models indicate a strong consensus that the event will continue to intensify through the winter, potentially peaking between November and January at levels beyond previous instrumental records.

Experts had previously suggested that 2027 is likely to be the hottest year on record, surpassing the previous high set in 2024, with average temperatures expected to continue rising. However, Dr. Hausfather cautioned that El Niño's impact on global temperatures typically lags behind rising ocean temperatures by several months, suggesting the most significant effects may be felt in 2027.

Meteorologist Jeff Berardelli confirmed that the 2026 El Niño has broken the record for the highest ocean anomaly in over 170 years, reaching this threshold two months earlier than the 2015 record. He added, "2026 is in a league of its own. We have two months left for this El Niño to continue to intensify. And it will."

In the United Kingdom, preparations are underway for a potentially stormy autumn due to the Super El Niño. Scientists anticipate an increased likelihood of heavy rainfall and flooding, particularly affecting the North West of England from October to December. While a wetter autumn might be welcomed after intense heat, Professor Bill McGuire warns that such conditions are often followed by severely cold winters, though this pattern is not guaranteed.