Super El Niño by November 2026: official forecasts point to El Niño, not a confirmed “super” event

The forecasts do not line up perfectly on the earliest season: NOAA/CPC still favors neutral conditions through April–June, while IRI already assigns higher odds to El Niño for that same period ^[1][3]. But they agree on the larger point: the Pacific is shifting toward El Niño in 2026.

The “Super El Niño” probability is still speculative

A normal El Niño forecast is not the same as a “Super El Niño” forecast. In the cited official outlooks, NOAA/CPC and IRI provide probabilities for ENSO categories, but they do not publish a formal probability that a “Super El Niño” will exist by November 2026 ^[1][3].

Some general-weather and media reports do discuss more extreme scenarios. One report says model runs suggest a possible very strong or even record-level event ^[7]. Another says leading model guidance indicates a 20–25% chance of a “Super” El Niño by late 2026 and an 80% chance of a strong event ^[8]. Those figures are useful as risk signals, but they should not be treated as the official NOAA/CPC or IRI baseline ^[1][3][8].

For a November 2026 outlook, the most defensible summary is: El Niño is likely to be underway or dominant by late 2026, but “Super El Niño” remains a scenario to monitor rather than a confirmed forecast ^[1][3].

How it could affect global temperatures

The main global temperature concern is that El Niño can add a natural warming push to the climate system. WMO says a mid-2026 El Niño would affect global temperature and rainfall patterns, and its seasonal update signals a “nearly global dominance of above-normal land surface temperatures” in the upcoming three-month period ^[11].

More extreme temperature claims are scenario-dependent. One weather report describes concern that a strong or “super” event could help lift global temperature increases as high as 1.7°C above pre-industrial levels, while another warns that a supercharged event could push global temperatures toward unprecedented extremes ^[8][12]. Those are not precise official temperature forecasts; the outcome depends on how strong the event becomes and how the ocean-atmosphere pattern evolves ^[6][11].

How it could affect weather

El Niño typically reorganizes tropical Pacific heat and shifts rainfall and storm patterns, so the impacts are uneven rather than globally uniform. WMO says a developing El Niño would affect rainfall patterns, with regional variation ^[11].

In North America, one cited outlook says warmer waters in the eastern equatorial Pacific can force the jet stream south, bringing warmer and drier conditions to the northern United States while the Gulf Coast and southeastern U.S. turn wetter ^[12]. Beyond the U.S., climate briefings link El Niño to risks such as crop failures, more frequent wildfires, concurrent droughts, increased flood risk, fisheries disruption, and disease risk in various regions, though the precise impacts depend on season, location, and event strength ^[6].

Bottom line

Use the official numbers for planning: 61% for El Niño emergence in May–July from NOAA/CPC and about 70% for April–June from IRI, with IRI showing El Niño dominant through late 2026 ^[1][3]. Treat “Super El Niño by November” as an elevated-risk scenario, not a settled forecast. If the event strengthens, the biggest global implications would be higher temperature risk and sharper regional swings in rainfall, drought, flood, wildfire, and storm-track behavior ^[6][11][12].