La Niña conditions could reappear starting in September 2025, according to the World Meteorological Organization (WMO), which could alter global weather and climate patterns. According to the World Meteorological Organization’s most recent report, despite the cooling influence of La Niña, global temperatures are still predicted to stay above average due to the larger context of climate change brought on by humans. It claimed that rising greenhouse gas emissions are changing rainfall and temperature cycles and intensifying extreme weather events.
The El Niño–Southern Oscillation (ENSO) has two opposing phases: El Niño and La Niña. While La Niña cools those waters, usually boosting the monsoon and causing harsher winters, El Niño is associated with warmer temperatures in the Pacific Ocean near Peru, which diminish India’s monsoon and make winters milder. Sea surface temperatures in the Pacific have remained near average since March of this year, when neutral conditions prevailed. The World Meteorological Organization’s Global Producing Centers for Seasonal Prediction, however, predict that there is a 55% likelihood of La Niña forming between September and November and roughly a 60% possibility between October and December.
El Niño is not likely to occur during this time. WMO forecasts above-normal temperatures for the months of September through November across a large portion of the Southern Hemisphere and much of the Northern Hemisphere. It is anticipated that rainfall patterns would resemble those usually linked to a moderate La Niña. The update also emphasized that other patterns, like the Indian Ocean Dipole, Arctic Oscillation, and North Atlantic Oscillation, also influence seasonal weather outcomes, demonstrating that ENSO is not the only factor influencing Earth’s climate.
