Record “Super El Niño” Threat — 2027 Could Become Warmest Year on Record, Scientists Warn

Scientists worldwide have raised alarm over the growing risk of a potentially exceptionally strong “Super El Niño” developing in the Pacific Ocean, a scenario that could make 2027 the warmest year on record and amplify hazards such as heatwaves, droughts, floods, wildfires, crop failures and food insecurity. Forecasts from agencies including the UK Met Office, NOAA and ECMWF show unusually high sea surface temperature projections in the tropical Pacific, with some models indicating increases of 2–3°C — levels consistent with a record-breaking El Niño event.
If realized, experts say global temperatures could temporarily exceed pre-industrial levels by 0.5°C or more, possibly surpassing 2024 as the hottest year. WMO leaders note the threat also offers governments a critical window to prepare for heightened impacts.
What is a Super El Niño?
El Niño is a recurring natural climate phenomenon in which sea surface temperatures in the central and eastern equatorial Pacific become unusually warm, disrupting atmospheric circulation and weather patterns worldwide. A typical El Niño is associated with a ~0.5°C rise in Pacific sea surface temperatures; an increase of 2°C or more would qualify as a “Super El Niño.”
Model signals and probabilities
Multiple seasonal forecasts indicate rapid Pacific warming through autumn into winter.
NOAA estimates a better-than-two-thirds chance of El Niño conditions strengthening this season.
Several models show probabilities of a very strong event in winter 2026–27, with some indicating 2–3°C sea surface temperature anomalies.
Global and regional impacts
North America: heightened heat and drought risk in some regions, with increased rainfall and flood risk along parts of the Gulf Coast and Southeast.
Pacific and South America: heavier rains and flooding in western South America; prolonged drought and wildfire risk in Indonesia.
Australia: increased likelihood of severe drought and bushfires.
South Asia: more erratic monsoon patterns, threatening agricultural yields.
Marine ecosystems: weakened upwelling could reduce phytoplankton, disrupting fisheries and food chains.
Food security and humanitarian concerns
Experts warn that crop losses and disrupted food supplies could drive price spikes and exacerbate food insecurity, particularly in vulnerable regions already facing conflict or poverty. Historical super El Niño events — notably 1997–98 — caused widespread environmental and economic damage, including severe coral reef loss.
Climate change interaction
Scientists emphasize that while El Niño is natural, its effects are occurring on top of a warmer climate. The extra heating from a super El Niño would compound the impacts of anthropogenic warming, producing more extreme outcomes than in past events. A temporary dip in global temperatures after El Niño should not be mistaken for a reversal of long-term global warming trends.
Recommended preparations
Researchers and institutions urge governments to:
Strengthen early-warning systems, emergency preparedness and climate adaptation plans, especially for water and agriculture.
Pre-position food reserves and coordinate international support to mitigate global food-supply shocks.
Reinforce public health, wildfire management and flood protection systems.
Prioritize support for vulnerable populations and ensure timely, transparent climate communications.
Bottom line: if current projections hold, 2027 could set new heat records and intensify climate-related risks worldwide. But proactive planning, improved climate resilience and international cooperation can reduce harm and protect the most vulnerable.