ENSO Forecast

December 2025 El Niño/Southern Oscillation (ENSO) forecast by the Climate Prediction Center of the US National Weather Service. 

ENSO Alert System Status: La Niña  Advisory. 

La Niña is favoured to continue for the next month or two, with a transition to ENSO-neutral most likely in January – March 2026 (68% chance).

Below is a chart of Pacific Ocean SST anomalies.