Scientists and meteorologists are watching the Pacific Ocean closely right now, and what they’re seeing has the potential to reshape global weather patterns for the next two years. A “Super El Niño” may be forming — and if it does, the consequences for temperatures, storms, droughts, and floods around the world could be profound.
What Is El Niño?
El Niño is a natural climate pattern that occurs when sea surface temperatures in the central and eastern tropical Pacific Ocean warm significantly above average. It forms part of a larger cycle known as the El Niño-Southern Oscillation (ENSO), which alternates between warming phases (El Niño) and cooling phases (La Niña).
El Niño typically develops every two to seven years and lasts between nine and twelve months, though stronger events can persist longer. Its effects ripple out across the globe — shifting rainfall patterns, altering storm tracks, and amplifying or suppressing temperature extremes depending on the region.
What Makes a “Super” El Niño?
The term “Super El Niño” is not an official scientific classification — NOAA does not use the label formally — but it has become widely used in both scientific and mainstream media to describe an unusually strong El Niño event, one where Pacific sea surface temperatures rise far above the thresholds used to define a standard strong event. The 1997-98 El Niño, for example, is often described as a super event, and it caused catastrophic flooding in parts of South America, severe droughts in Australia and Southeast Asia, and record warmth across much of the globe.
What Are Forecasters Saying About 2026?
The US National Oceanic and Atmospheric Administration (NOAA) has reported a 62 per cent chance of El Niño forming during the summer of 2026, following the rapid collapse of the La Niña conditions that dominated the past year. If it does form, there is currently a one-in-three chance it could reach “strong” status by October to December 2026 — conditions that some scientists are cautiously describing as potentially super-strength.
European forecasters at Severe Weather Europe have gone further, warning that a rapid shift from La Niña to a strong El Niño could trigger what they describe as a “massive global weather shift” — with significant consequences for North America, Europe, and the tropics. Some early modelling suggests that if the event is as strong as feared, 2027 could beat 2024 as the hottest year on record, potentially pushing global average temperatures to around 1.6°C above pre-industrial levels.
What Could a Super El Niño Mean for the UK?
For the United Kingdom, El Niño events historically tend to bring milder, wetter winters and can disrupt the jet stream in ways that make weather patterns less predictable. A super-strength event could mean an exceptionally mild winter in 2026-27, elevated rainfall totals, and a higher risk of flooding across parts of northern and western Britain.
It could also mean a warmer summer in 2026, with above-average temperatures across much of western Europe during July and August.
What Could It Mean for the United States?
In the US, a strong El Niño typically brings wetter and cooler conditions to the southern states during winter, while the Pacific Northwest and the Great Lakes region often experience milder temperatures. The Atlantic hurricane season may be suppressed — El Niño tends to increase wind shear over the Atlantic, which inhibits hurricane development. That would be a rare piece of good news given the extreme weather the US has endured in recent years.
Should We Be Worried?
The honest answer is that it is still too early to say with certainty how strong this El Niño will be. Climate models are still being refined, and the transition from La Niña to El Niño is notoriously difficult to predict precisely. What scientists are agreed on is that the current trajectory of the Pacific bears close watching — and that the combination of a strong El Niño with the background warming already baked in by climate change could produce outcomes more extreme than anything we have seen before.
Watch this space — quite literally.