Is 2025 A La Nina Year. The pattern shifts back and forth irregularly. After a strong el nino, like the world saw in late 2023 and early 2024, conditions tend to swing.
El niño is likely to give way soon, ushering in a quick switch to its opposite atmospheric and ocean pattern, la niña. Last year, 2022, was the third consecutive la niña year, which is highly unusual and has only occurred three times since reliable records began in the 1950s.