Super El Niño 2026: What Scientists Are Warning Right Now?

A rare Super El Niño may occur in 2026, potentially breaking global temperature records and altering weather patterns from the Indian monsoon belt to the American West.

The National Oceanic and Atmospheric Administration (NOAA) estimated in April 2026 that there was a 61% likelihood that an El Niño would form and a 1-in-4 chance that it would reach "super" intensity. El Niño conditions are expected to start as early as May or July, according to the World Meteorological Organisation. More remarkably, sea surface temperature anomalies over the equatorial eastern Pacific are expected to surpass +2°C by late 2026, according to climate models from the University of Hawaii at Mānoa. This is the exact threshold that grants such an event the uncommon title of "Super El Niño."

What is an El Niño? Geography and Climatology

The warm and cool stages of a natural climatic pattern that occur throughout the tropical Pacific are known as El Niño and La Niña, respectively. Ocean temperatures are abnormally warm during El Niño and abnormally cool during La Niña. El Niño can last anywhere from nine to twelve months to several years, and they usually happen every two to seven years. Strong trade winds typically blow from east to west along the equator, allowing cold, nutrient-rich water to surge up off the beaches of Ecuador and Peru while accumulating warm surface water near Asia and Australia. While the western Pacific is warm and rainy, the eastern Pacific remains cold. These trade winds decrease and occasionally reverse completely during El Niño. This phenomenon is known as Kelvin waves, which cause warm water to push eastward over the Pacific like a gradual tidal wave. Geographically, the key monitoring zone is the Niño 3.4 region: a rectangle of ocean between 5°N–5°S latitude and 170°W–120°W longitude, roughly in the central equatorial Pacific. In this particular geographic region, scientists define events by measuring persistent abnormalities in sea surface temperature. A typical El Niño is defined as an anomaly above +0.5°C for five consecutive months. Above +1.5°C is a "strong" event. At +2.0°C or above, the event earns the informal title of "Super El Niño" — an occurrence that has happened only five times since reliable records began in 1950: in 1972–73, 1982–83, 1997–98, 2015–16, and, most recently, 2023–24.

Threshold temperature anomalies for different types of El Niño events.

The feedback between the ocean and atmosphere is self-reinforcing: warmer ocean water warms the air above it, changing the atmospheric pressure gradient. This further weakens the winds, allowing even more warm water to build up. An El Niño phenomenon is exceedingly hard to stop once it has begun. Although its rippling effects on weather patterns can last for 12 to 18 months, it usually emerges throughout the spring and summer of the Northern Hemisphere, peaks between November and January, and fades by the following spring. This El Niño phenomenon can effectively reorganise global atmospheric activity, i.e. thunderstorm activity, the engine of the jet stream and global circulation — shifting from the western Pacific to the central and eastern Pacific. This single rearrangement triggers a cascade of downstream anomalies: California floods, Australian droughts, East African floods, southern African dry spells, suppressed Atlantic hurricane seasons, and critically, disruptions to the Asian monsoon system.

Does climate change have a role in the Super El Niño effect?

El Niño has been a feature of Earth's climate for millennia. So why are scientists so alarmed about the 2026 event? The answer lies in a troubling amplification: a natural climate cycle superimposed onto a planet that has already been fundamentally altered by human activity. Roughly 90% of the extra heat that greenhouse gases trap is absorbed by our oceans. As a result, the Pacific has accumulated a vast amount of thermal energy over decades. Some of that stored heat is released back into the atmosphere when an El Niño forms. The heat pulse was notable but limited in a pre-industrial climate that was cooler. It now contributes to a background warming trend that has already raised global temperatures by 1.2 to 1.5 degrees Celsius over pre-industrial levels. The rate of global warming has almost doubled since 2015, according to the 2026 Global Warming Acceleration Study that took short-term natural changes into account. According to certain climate models, worldwide monthly temperatures would momentarily rise by +2.0°C over pre-industrial levels in 2026 or 2027, marking the first time in recorded history that such a threshold would be surpassed. This would cross the most ambitious goal of the Paris Agreement in a dramatic and symbolically disastrous manner. Although a link between climate change and El Niño itself is under study and evolving. But evidence suggests that a warmer atmosphere and ocean may be making El Niño events more intense, even if their frequency does not necessarily increase. According to a study published in Nature Journal in 2025, a Super El Niño year can cause "Climate Regime Shifts"—abrupt, long-lasting changes in a climate system that pose major risks to ecosystems and human societies—and global warming will increase the frequency of these transitions. Before the possible 2026 event, the previous documented Super El Niño occurred in 2023–2024. This event came after the remarkable 2015–16 event, which has long been regarded as the standard for contemporary El Niño extremes. It is estimated that the Super El Niño of 1997–1998 killed over 23,000 people and caused $45 billion in damages worldwide. If the 2026 event materialises at full vigour, it will occur against the warmest baseline in recorded history, since each subsequent event has occurred against a warmer baseline.

How can the 2026 Super El Niño result in Global weather upheaval?

A Super El Niño does not stay confined to the Pacific. Its atmospheric fingerprint reaches into every corner of the globe, reshuffling rainfall, heat, and storm activity in ways that affect billions of people. El Niño occurrences usually have a warming effect on the global climate and alter rainfall and temperature patterns in various places. As a result, 2024 was the hottest year ever recorded due to both human-caused climate change from greenhouse gases and the strong El Niño that occurred in 2023–2024. According to the World Meteorological Organisation (WMO), land surface temperatures are predicted to be above average almost everywhere during the May–June–July season. In addition to Europe and Northern Africa, the signal is particularly strong over southern North America, Central America, and the Caribbean. There are significant regional differences in rainfall forecasts. A Super El Niño reshuffles weather globally — no region escapes untouched. South and Southeast Asia face suppressed monsoons and drought, while Australia and Indonesia bake under drier, hotter conditions. Eastern Africa sees destructive flooding, but Southern Africa and the Amazon suffer severe drought. In North America, the parched Southern Plains may finally get relief, while California risks flooding and the Pacific Northwest faces worsening wildfires. Europe and Northern Africa brace for above-normal temperatures nearly everywhere. The one silver lining: reduced Atlantic hurricane activity, as El Niño's wind shear disrupts storm formation. For billions in monsoon-dependent nations, however, the forecast is deeply concerning.

Possible impact of the Super El Niño on various global geographic regions.

The Monsoon Nation in crosshairs

India, along with other Southeast Asian monsoon-dependent nations are most at risk from a Super El Niño. Pacific sea surface temperatures are closely linked to the Southwest Monsoon, which provides around 75% of India's yearly rainfall between June and September. The monsoon circulation is driven by a temperature difference between the Asian mainland and the Indian Ocean, which is weakened by El Niño episodes. Historically, this has led to droughts, drained reservoirs, and agricultural crises due to below-normal rainfall. For the first time in three years, the India Meteorological Department (IMD) predicted below-average monsoon rainfall in April 2026. This is not an abstract figure for a nation of 1.4 billion people, where more than half of the cultivated land irrigation is monsoon-dependent. For India, there are more compounding dangers associated with the 2026 Super El Niño. There is a substantial correlation between El Niño years and longer and more intense summer heatwaves in India. A warmer baseline combined with El Niño warmth is a truly concerning combination for public health and energy infrastructure in a nation that has already experienced successive record-breaking heat events in recent years. The risk is increased in cities like Delhi, Patna, Ahmedabad, and Nagpur, which are already susceptible to intense heat. The Indian Ocean Dipole (IOD) is one possible moderating element, though. The "positive IOD" that occurs when the western Indian Ocean is abnormally warm in comparison to the east can somewhat offset El Niño's suppression of the Indian monsoon. In 2026, meteorologists are keeping a careful eye on the Indian Ocean Dipole's development to look for any signs of improvement. The timing and distribution of monsoon rains will also be influenced by the Madden-Julian Oscillation (MJO), a slower-moving wave of atmospheric activity, complicating the forecast. Additionally, ENSO and other important climate factors, including the Indian Ocean Dipole, the Southern Annular Mode, and the North Atlantic Oscillation, are taken into consideration in WMO's monthly Global Seasonal Climate Update. Beyond India, other monsoon-dependent nations across South and Southeast Asia — Bangladesh, Pakistan, Sri Lanka, Thailand, Vietnam — face similar risks of disrupted rainfall, while Australia and Indonesia brace for drier, hotter conditions that elevate wildfire and drought threats.