La Nina 2025 To 2026 Weather Patterns. For april and may 2025, most models predict enso neutral conditions, although there is still a small chance that the la niña conditions persist. La niña begins when pacific trade winds strengthen, pushing warm surface waters westward and allowing cooler water to rise in the eastern pacific.

La niña begins when pacific trade winds strengthen, pushing warm surface waters westward and allowing cooler water to rise in the eastern pacific. Rapid changes in the oceanic and atmospheric patterns have prompted noaa to release an official la niña watch.