Scientists Find New Clue to Predict El Niño a Year Ahead

What changed

Scientists have found a new clue that may help predict when El Niño will strike, while the UN weather agency warns that this developing event could affect weather into 2027. The phenomenon is intensifying in the Pacific and could become so powerful that it falls “literally off the monitoring charts.”

El Niño usually arrives every two to seven years. This time, the warning comes a year ahead, with extreme weather already part of the concern.

Why it matters

The practical change is more time to prepare. Pacific communities and governments exposed to El Niño-related weather may have longer to plan for disruption, even though the report does not identify the predictive clue or say exactly when the event will peak.

The uncertainty matters. The timing, strength and geographic spread of the effects are still unclear, so the new clue is best understood as an early warning tool, not a timetable. If the phenomenon keeps intensifying, preparations may need to cover risks extending well beyond the initial event and into 2027.