‘Simply staggering’: Rapidly developing ‘super El Niño’ on track to peak in December

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The ongoing “super El Niño” is likely to peak at the end of 2026 and push average global temperatures to… The post ‘Simply staggering’: Rapidly developing ‘super El Niño’ on track…

The ongoing “super El Niño” is likely to peak at the end of 2026 and push average global temperatures to record levels next year.

That is according to Carbon Brief’s latest “state of the climate” update, which analyses El Niño forecasts from more than a dozen climate models, as well as six global temperature datasets.Dr Zeke Hausfather, Carbon Brief’s climate science contributor, described this year’s El Niño as “simply staggering” when answering questions from CB+ members during a CB Connect “ask me anything” session.

El Niño is a naturally occurring climate pattern in the tropical Pacific that releases heat from the ocean into the atmosphere and temporarily boosts global temperatures.

This year’s El Niño event – which has been underway since June – has already broken a number of records and reshaped the world’s weather, fuelling fires in Indonesia and “super typhoons” in the west Pacific.

The strength of an El Niño is tracked using the “Niño3.4 anomaly”, which is a measure of how much warmer sea surface temperatures are than average in a section of the central Pacific.

Analysis of more than 600 forecasts from 14 different climate models by Hausfather for Carbon Brief’s “state of the climate” update shows how models project this year’s El Niño will peak with an anomaly of around 4C. This would be more than a degree above the previous record in 2015-16.

“This El Niño event is developing so quickly and is reaching sea surface temperatures so warm that it’s simply staggering. We haven’t seen anything like this in the historical record and it may end up being the strongest El Niño event in the past millennium.”

On 18 September, the daily anomaly in the Niño3.4 region broke the satellite-era record set in 2015 when it reached 3.11C.

Meanwhile, September as a whole recorded the highest monthly Niño3.4 region temperature anomaly – 2.84C – since sea surface temperature records began in the mid-1800s.

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