Geneva (WMO) - There is a 55% chance of a weak La Niña impacting weather and climate patterns during the next three months, according to the latest Update from the World Meteorological Organization (WMO). Even though La Niña has a temporary cooling influence on global average temperatures, many regions are still expected to be warmer than normal.
La Niña refers to the periodic large-scale cooling of the ocean surface temperatures in the central and eastern equatorial Pacific Ocean, coupled with changes in the tropical atmospheric circulation, including changes in winds, pressure and rainfall patterns.
According to the latest forecasts from the WMO Global Producing Centres for Seasonal Prediction , as of mid-November 2025, oceanic and atmospheric indicators reveal borderline La Niña conditions. There is a 55% probability of crossing La Niña thresholds during the December-February 2025-2026 period.
