Is La Nina Coming Back In 2025. La niña is expected to emerge, with chances for la niña gradually increasing from 66% to 74% during the november 2024 to january 2025 timeframe. Forecasters know la nina has arrived when temperatures in the eastern pacific ocean along the equator west of south america cool by at least half a degree celsius (0.9.
As the opposite extreme of el niño, la. These changes disrupt global weather.