The World Meteorological Organization (WMO) has issued an unusually forceful warning that the current El Niño will continue strengthening and is expected to reach very strong intensity before peaking toward the end of 2026, potentially creating substantial weather and economic disruptions well into 2027. Forecasts from the organisation’s Global Producing Centres show an exceptionally high, nearly 100% probability that El Niño will persist through February 2027, the strongest level of confidence the World Meteorological Organization says it has ever expressed in one of its regular El Niño updates.
Exceptionally warm waters across the central and eastern tropical Pacific are reinforcing atmospheric patterns associated with El Niño, while other climate drivers are also becoming important. The World Meteorological Organization expects a positive Indian Ocean Dipole to develop during the September-November period, with tropical Atlantic waters remaining warmer than normal, creating the potential for regional weather outcomes to become stronger, weaker or substantially different from standard El Niño expectations.
The warning has potentially enormous implications because El Niño affects rainfall, temperatures, agriculture, hydropower, fisheries and disaster risk across large parts of the global economy. The organisation cautions that the strength of the Pacific event alone cannot determine exactly what will happen in any individual country, but a very strong El Niño materially increases the likelihood of major disruptions including drought, flooding and extreme heat.
Why is the World Meteorological Organization so confident that El Niño will persist into 2027?
The confidence comes from unusually strong agreement across multiple global forecasting systems. Ocean and atmospheric indicators are reinforcing one another, with tropical Pacific sea-surface temperatures already substantially above normal and atmospheric circulation responding in a manner consistent with a strengthening El Niño.
The World Meteorological Organization says its modelling network shows a nearly 100% probability that El Niño will continue through both September-November 2026 and December 2026-February 2027. That degree of model agreement is unusual enough that the organisation highlighted it as the first time one of its El Niño updates has expressed such an unequivocal outlook.
The current event developed rapidly during 2026. Earlier seasonal modelling had already projected strong El Niño conditions during July-September, with the multi-model ensemble approaching a roughly 2°C anomaly in the central tropical Pacific and continuing to strengthen through the northern hemisphere autumn.
Forecast certainty generally improves as an El Niño becomes physically established because models no longer depend mainly on predicting whether the phenomenon will emerge. They can instead analyse an existing and intensifying ocean-atmosphere system.
Does a very strong El Niño mean every country will experience extreme weather?
No, and this is one of the most important qualifications in the World Meteorological Organization outlook. El Niño is a major global climate driver, but its impacts differ significantly by geography, season and interaction with other ocean and atmospheric conditions.
Some regions typically become wetter during strong El Niño periods, while others experience drought. Temperature effects can also vary, and individual storms, monsoons or rainfall seasons are influenced by numerous factors beyond Pacific sea-surface temperatures.
The positive Indian Ocean Dipole forecast for the coming months is especially relevant to countries surrounding the Indian Ocean. It could reinforce or modify typical El Niño rainfall patterns across parts of Asia, Australia and Africa, while warm conditions in the tropical Atlantic may create additional interactions elsewhere.
This means national meteorological agencies remain more useful for local decisions than global El Niño headlines alone. The World Meteorological Organization’s role is to identify the large-scale signal, while regional forecasting centres translate that signal into specific probabilities for rainfall, heat and other hazards.
Where could floods and drought risks increase as El Niño strengthens?
Historical El Niño patterns frequently increase rainfall across parts of the southern United States, western South America and some equatorial regions while contributing to drier conditions across parts of Southeast Asia, Australia and southern Africa. The exact footprint changes from event to event, so those historical tendencies should be treated as risk patterns rather than deterministic predictions.
The World Meteorological Organization’s September-November outlook indicates a pronounced atmospheric response to the developing Pacific conditions. It also shows an increased probability of above-normal temperatures across almost all land areas, which can intensify drought impacts even when rainfall deficits themselves are only moderate.
Flooding risks arise through a different pathway. Where El Niño shifts storm tracks or strengthens rainfall, saturated soils and vulnerable river systems can turn repeated rain events into destructive floods or landslides.
That is why the organisation is emphasising early warning rather than waiting to see whether particular regional forecasts become disasters. Governments can pre-position relief supplies, adjust reservoir management and prepare agricultural contingency plans when seasonal risk signals become unusually strong.
Why could the strengthening El Niño affect global food prices and commodity markets?
Agriculture is one of the clearest links between climate anomalies and financial markets. Crops such as wheat, corn, rice, coffee, cocoa, sugar and palm oil depend on specific combinations of temperature and rainfall during planting, flowering and harvest periods.
A strong El Niño can simultaneously improve yields in some producers and damage them in others. That matters because global food markets are often concentrated geographically, meaning severe weather affecting a handful of major exporters can shift international prices disproportionately.
Livestock and fisheries can also be affected. Warmer waters alter marine ecosystems and fish distribution, while drought raises feed and water costs for farmers.
Commodity investors therefore track El Niño forecasts long before harvest data begins showing damage. The economic effects are probabilistic, but once meteorological forecasts become as confident as the latest World Meteorological Organization outlook, weather risk becomes increasingly difficult for food companies and governments to ignore.
What does a very strong El Niño mean for electricity demand and energy systems?
Energy systems can be affected on both the supply and demand sides. Higher temperatures increase air-conditioning use, lifting electricity consumption in countries where power demand peaks during hot weather.
Drought can reduce hydropower generation by lowering reservoir levels and river flows, forcing electricity systems to replace lost renewable power with gas, coal or imported electricity. That can raise costs and emissions even when the original climate event occurs far from major energy markets.
Flooding creates different problems. Extreme rainfall can damage transmission lines, substations, roads and fuel infrastructure while disrupting mining and transport.
A strong El Niño therefore becomes an infrastructure issue rather than simply a weather story. Utilities, grid operators, energy traders and governments may need to prepare simultaneously for higher demand and less reliable supply.
Could El Niño make 2027 another record-hot year globally?
The possibility is significant. The World Meteorological Organization said earlier in 2026 that the developing El Niño increased the chance that 2027 could become another record-breaking year for global mean temperature. Its five-year climate outlook gives a 75% probability that the average temperature for 2026-2030 will exceed 1.5°C above the 1850-1900 baseline.
El Niño tends to release additional heat from the Pacific Ocean into the atmosphere, temporarily lifting global temperatures above the underlying long-term warming trend. Some of the hottest global years on record have therefore occurred during or immediately after strong El Niño events.
That does not mean a 2027 record is guaranteed. Volcanic activity, ocean patterns and atmospheric variability can all influence global temperature.
The concern is cumulative. Human-caused warming has raised the baseline, and a powerful natural warming event is now developing on top of that elevated background.
What are the key takeaways from the World Meteorological Organization’s latest El Niño warning?
- El Niño is firmly established in the tropical Pacific and is expected to strengthen further during the remaining months of 2026.
- The World Meteorological Organization says there is a nearly 100% probability that the event will persist through February 2027.
- The organisation says it has never previously expressed this degree of certainty in an El Niño update.
- Forecast models indicate the event could reach very strong intensity before peaking toward the end of 2026.
- Above-normal temperatures are expected across most global land areas during the coming seasonal period.
- A positive Indian Ocean Dipole is also expected, meaning regional weather impacts may differ from conventional El Niño patterns.
- Strong El Niño conditions can increase risks involving floods, drought, extreme heat, agriculture, hydropower and food security.
- Earlier World Meteorological Organization modelling indicated the developing event could increase the probability of another global temperature record during 2027.
Why should businesses and governments treat this El Niño forecast differently from a routine seasonal warning?
The central difference is confidence. Seasonal climate predictions always contain uncertainty, but a nearly 100% persistence probability through February 2027 tells governments and businesses that planning around a short-lived or rapidly weakening El Niño is becoming increasingly difficult to justify.
That does not mean every anticipated drought or flood will occur. It means the underlying climate signal is strong enough that exposure should be actively managed rather than treated as a distant possibility.
Agricultural businesses can reassess sourcing and insurance. Utilities can review fuel inventories and hydropower assumptions. Governments can strengthen flood, heat and drought preparedness before emergency conditions emerge.
The El Niño itself is a natural phenomenon. The larger challenge is that it is unfolding on a planet already experiencing unusually high ocean and atmospheric temperatures, creating the potential for natural variability and long-term warming to amplify one another in ways that make historical weather expectations increasingly unreliable.
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