The Pacific Ocean’s Niño 3.4 monitoring region reached a monthly sea surface temperature of 29.70°C in September 2026, an all-time high in the Copernicus Climate Change Service’s record. Its October 12 bulletin says El Niño conditions are strengthening and may intensify further. Copernicus September bulletin
The key measurements
Copernicus also reported that average sea surface temperature across the extra-polar oceans, between 60° south and 60° north, reached 21.05°C. That was a September record, exceeding 20.92°C in September 2023. Global surface air temperature was 16.27°C, making the month the second-warmest September in its ERA5 dataset. It was estimated at 1.63°C above the 1850–1900 reference average. Official measurements and methodology
Record warmth and event strength are different
AFP’s report, published by The Hindu, includes an important qualification: Copernicus said it could not yet label the current El Niño the strongest ever recorded. Background ocean warming complicates comparisons, and an adjusted index did not yet place the event above past ones. AFP’s account, including the qualification
A temperature is an absolute reading; an anomaly measures departure from a reference. A region can be very hot because both the underlying climate and a shorter-term climate pattern are contributing. Comparing only the absolute reading can therefore miss part of the explanation.
What this means for Asia
Our analysis: The bulletin is a reason to watch regional forecasts closely, not a ready-made prediction for every district. An ocean monitoring region covers a very different geographical scale from a farm, city or reservoir. Local rainfall, soil conditions and water storage still need local evidence.
For an agriculture story, the next useful information is how a forecast changes for a specific crop-growing area and season. For an energy story, it is whether local temperature and rainfall forecasts indicate additional demand or supply pressure. Neither conclusion follows from the 29.70°C figure alone.
Do not confuse one month with a long-term threshold
Copernicus distinguishes the current run of very warm months from the Paris Agreement’s long-term temperature limit. A single monthly anomaly is not a multi-decade climate average. Equally, that distinction does not make a high monthly reading unimportant; it tells readers which measurement they are looking at.
The most useful follow-up will be whether the Pacific event strengthens further and how regional forecasting agencies translate it into location-specific outlooks. This article does not claim that a particular flood, drought or crop loss has already been caused by the current event.
Reporting basis: Copernicus’s October 12 release and AFP’s report. Graphic: The Press of Asia; conceptual illustration, not a satellite image or forecast map.
The International Desk covers world and Asian affairs, diplomacy and conflict, with a focus on what they mean for India. Stories are checked against at least two credible sources before publication.
