There is currently a 62% chance that El Niño develops during June through August 2026, a shift that could influence hurricane activity, global temperatures and the coming winter weather pattern. Forecasters say the current La Niña is fading, with neutral conditions expected to take over before El Niño becomes the more likely setup later in the year. NOAA has already issued an El Niño watch, which means conditions are favorable for development within the next six months. Even with that signal, scientists continue to stress that spring forecasts come with extra uncertainty because this is the least reliable time of year for tracking how the Pacific will evolve.
“Keep in mind that because we’re making these forecasts during the spring season, a time of lower model accuracy, so there is large uncertainty,” said Michelle L’Heureux of NOAA’s Climate Prediction Center. What makes the outlook notable is not only the chance that El Niño arrives, but the possibility that it could become strong by late 2026. NOAA has said there is roughly a 1-in-3 chance of that outcome. The signal is being supported by unusually warm water below the ocean surface and an expected weakening of trade winds, both of which help warm water spread eastward across the equatorial Pacific. That ocean-atmosphere shift is the core of El Niño, the warm phase of the El Niño-Southern Oscillation, or ENSO, a recurring pattern that typically returns every two to seven years.
For many U.S. readers, the first question is hurricanes. El Niño tends to suppress Atlantic activity while favoring more storms in the eastern and central Pacific. The main reason is stronger vertical wind shear over the Atlantic, which can disrupt developing tropical systems before they organize. Historical NOAA-backed research has also linked El Niño years with a lower chance of repeated U.S. hurricane hits, including a 28% probability of two or more U.S. hurricane landfalls, compared with higher odds in neutral and La Niña years. That does not remove risk; it changes the background pattern. Heat is the other major reason forecasters are watching the Pacific so closely.
El Niño years often line up with warmer global average temperatures because the warmer tropical Pacific releases more heat into the atmosphere. The last El Niño helped set the stage for 2024 becoming the warmest year on record globally, and the lag effect means the biggest global temperature bump often shows up after the event peaks. That is why some forecasters see 2027 as especially important if El Niño strengthens late this year. El Niño is not the only reason records fall, but it can add a noticeable jump on top of the long-term warming trend.
Its most reliable U.S. impacts usually wait until the colder months. During a typical El Niño winter, the southern tier of the country has better odds for wetter conditions, while parts of the northern tier often lean drier. NOAA and outside experts also point to a tendency for warmer conditions across much of the northern United States, though the exact setup can vary widely from one event to the next. In some regions, that can also alter snowfall patterns, with above-average snowfall more likely in parts of the southern Rockies and mid-Atlantic than in the northern Plains and Great Lakes. Scientists do not use dramatic labels as forecasts. What they do say is simpler and more useful: the Pacific is shifting, the atmosphere may follow, and the effects could reach far beyond one season.
