La Niña conditions have developed in the equatorial Pacific as of September 2025, marked by below-average sea surface temperatures and characteristic wind and convection patterns, according to NOAA’s latest assessment. The current event is forecast to remain weak through the Northern Hemisphere winter, with a 55% chance of transitioning to ENSO-neutral by early 2026. Maritime sectors, including the Panama Canal Authority, are closely monitoring the development after last year’s El Niño led to historic low water levels and operational restrictions. Improved rainfall during the La Niña transition has helped restore full canal transit capacity, with the Panama Canal reporting record revenues and vessel transits for fiscal year 2025. While a weak La Niña is expected to have modest climate impacts, it may still affect regional weather patterns through winter.