Super El Niño 2026 Explained: Causes, Impacts, and What Comes Next

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When farmers in Maharashtra planted their kharif crops this year, they were already watching the sky a little more anxiously than usual. The reason wasn't local. It was building thousands of kilometres away, beneath the surface of the Pacific Ocean.

Photo Credit: Magnific

Climate scientists around the world are now closely monitoring what could become a Super El Niño - an extreme version of a climate pattern that has historically triggered droughts, floods, and record-breaking temperatures worldwide. The World Meteorological Organisation (WMO) has confirmed growing confidence that El Niño conditions will emerge as early as May-July 2026, with high confidence in further intensification in the months that follow. For India, the timing could not be more consequential.

What Is El Niño And What Makes It "Super"?

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El Niño, Spanish for "little boy," is a climate pattern defined by the unusual warming of surface waters in the central and eastern tropical Pacific Ocean. Under normal conditions, trade winds blow from east to west along the equator, pushing warm water towards Asia and allowing cooler, nutrient-rich water to rise near South America. During El Niño, this system reverses: trade winds weaken, and that warm water slides eastward.

A Super El Niño is classified when sea surface temperature anomalies cross 2°C above the long-term average. For context, a standard El Niño begins when the sea surface temperature anomaly crosses just 0.5°C - meaning a Super El Niño is at least four times more intense than a standard event.

There have been only five such events since 1950. The last occurred from 2015 to 2016.

Why Is 2026 Different?

An exceptionally large reservoir of warm water is currently sitting beneath the surface of the Pacific. In April, a pair of cyclones straddling the equator caused wind direction to reverse, triggering a downwelling Kelvin wave, a pulse of energy beneath the ocean moving eastward. That subsurface pulse has now reached the eastern Pacific, fuelling intense warming off South America.

NOAA's latest diagnostic places El Niño development at an 82% probability between May and July 2026, with a 96% chance of it continuing through the Northern Hemisphere winter of 2026-27.

That said, scientists are urging caution. Forecasts still span a wide range in mid-May - from weak to strong El Niño conditions - and how winds behave in the coming weeks will determine what actually develops. In both 2014 and 2017, forecast models pointed towards strong El Niño conditions by midyear, and in both cases, the anticipated wind patterns never fully materialised.

What It Means For India

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El Niño typically warms the central and eastern Pacific, altering atmospheric circulation and weakening monsoon winds over the Indian subcontinent. Regions such as West Africa, the US, Australia, and India are more prone to experiencing floods, droughts, wildfires, and record-breaking temperatures when a very strong event develops.

The agriculture stakes are direct. India's southwest monsoon brings around 70% of the country's annual rainfall - roughly 870 mm - from June to September. The India Meteorological Department (IMD) forecasts the 2026 season may only see around 800 mm of rainfall, with the probability of a deficient season more than double the long-term average. Around 60% of Indian farmers rely on monsoon rainfall for their kharif crops.

Mrutyunjaya Mohapatra, Director General of IMD, noted that the development of positive Indian Ocean Dipole conditions and below-normal snow cover over the northern hemisphere could counter some of El Niño's impacts. But climate scientist and former IMD chief K J Ramesh was more measured: "The worst-case scenario could be a slightly negative rainfall during the monsoon," he said.

The Bigger Climate Picture

A December 2025 study found that a super El Niño year can trigger "climate regime shifts" - sudden and persistent changes in a climate system that pose serious threats to ecosystems and human well-being. The researchers found that after the 2015-16 super El Niño, the Gulf of Mexico reached a new sustained level of warmth that may have contributed to stronger hurricanes in the following years.

Scientists expect the development of a strong, and potentially super, El Niño event by early autumn, which could put 2027 on track to be the warmest year on record. There is currently a 19% chance that 2026 itself surpasses 2024, the current record holder.

Bottomline

A Super El Niño does not need to be confirmed to demand attention; the early signals already justify preparing. For India, this means watching the monsoon closely, protecting agricultural supply chains, and taking heat and water stress seriously as the year progresses. The Pacific has loaded the dice. Whether the outcome is catastrophic or manageable depends on what the winds do next, and how ready the world is when they shift.