La Nina 2025 Forecast 2025. Start Of La Nina 2025 Finley Johnston A dominant high-pressure system is forecast over the continent and a low over the west/northwest, which is also a common signal for La Niña springs in Europe, as seen in past data. During October-December 2025, there are equal chances (42%) of ENSO-neutral and La Niña.
La Nina 202525 Champions Gonzalo Nash from gonzalonash.pages.dev
2-year history of sea surface temperatures in the Niño-3.4 region of the tropical Pacific for all La Nina events since 1950 (gray lines) and the recent (2024-25) event (purple line). For the later forecast seasons, Oct-Dec 2025 and Nov-Jan 2025/26, there is no strong preference for any category, although La Niña is slightly favored over ENSO-neutral.
La Nina 202525 Champions Gonzalo Nash
There was considerable forecast tool disagreement for the Southeast U.S La Nina impacts early in the season and dynamical model guidance is the primary support for these highlighted regions A dominant high-pressure system is forecast over the continent and a low over the west/northwest, which is also a common signal for La Niña springs in Europe, as seen in past data.
La Niña Impact on Cyclones and Weather in the United States in Winter 2025. A dominant high-pressure system is forecast over the continent and a low over the west/northwest, which is also a common signal for La Niña springs in Europe, as seen in past data. The DTN forecast also looks at some of these analog years coming off of a weak La Nina and into cool-neutral ENSO conditions
La Niña Impact on Cyclones and Weather in the United States in Winter 2025. Updated: 13 March 2025 A transition to ENSO-neutral most likely during February-April 2025 (75% chance) and is favored to persist through the Northern Hemisphere summer 2025 Years like 2001, 2006 and 2018 are high on our list.