The EU's climate monitor reported that El Niño broke temperature records in September 2026, with sea surface temperatures reaching 29.70°C in the Nino3.4 region of the Pacific Ocean, higher than any previous strong El Niño events. While Copernicus acknowledged this as an "all-time high," it also noted that without adjusting for long-term ocean warming trends, they cannot definitively say this is the strongest El Niño ever recorded. The report also highlighted record global sea surface temperatures at 21.05°C and the second-hottest September on record globally, underscoring the impact of both El Niño and climate change.
Written locally by qwen2.5:14b on 2026-10-12,
using this article's own text rather than the other coverage of the
same event (that is the story summary below).
Story summary
In October 2026, the EU’s climate monitor reported that an intensifying El Niño set a new temperature record in September for a key zone of the Pacific known as Nino3.4, with sea surface temperatures reaching an "all-time high" of 29.70°C, surpassing previous strong events from 1982/1983, 1997/1998, and 2015/2016. Despite this milestone, the Copernicus Climate Change Service stated it could not yet confirm that the current El Niño is the strongest ever recorded. This weather pattern raises sea temperatures in the tropical Pacific, increasing risks of droughts and floods while exacerbating human-induced global warming, making it a significant concern for climate change mitigation efforts aimed at limiting temperature rises to below 2°C or ideally to 1.5°C above pre-industrial levels as agreed upon in the Paris Agreement.
Written for “El Nino Temperature Record” on 2026-10-12,
grounded in this article and the 1 other(s) covering the same event.
An intensifying El Nino broke a temperature record in a key zone of the Pacific in September, the EU’s climate monitor said on Monday (October 12, 2026), in another sign the weather pattern is gaining exceptional strength.
asserted
pattern → intensify → strength
Global forecasters have been warning for months that this El Nino would likely become the strongest ever observed and the latest record has tumbled even before the episode’s expected peak later this year.
asserted
record → warn → peak
The warming phase of a natural climate cycle, El Nino raises sea temperatures in the tropical Pacific, triggering changes in weather that can increase the risk of drought and flooding, and exacerbate man-made global warming.
asserted
that → warm → warming
The Copernicus Climate Change Service said sea surface temperatures in a tell-tale El Nino monitoring region of the Pacific, known as Nino3.4, had reached an “all-time high” of 29.70C last month.
asserted
temperatures → say → 29.70C
This exceeded the peak temperatures of previously strong El Nino events of 1982/1983, 1997/1998 and 2015/2016, “underscoring the exceptional intensity of the current El Nino”, the EU monitor said.
But in a statement to AFP, Copernicus said it “cannot yet say that the current El Nino is the strongest ever recorded”.
asserted
Nino → exceed → AFP
As climate change raises ocean temperatures, it can make recent El Nino events appear stronger than past ones, complicating historical comparisons.
asserted
events → raise → comparisons
Copernicus said it had adopted a new index, which accounts for the warming of tropical oceans, that suggested the current event is not yet stronger than past ones.
But the values observed in September “point to an already exceptionally strong El Nino, especially given that the event has not yet reached its peak”, Copernicus told AFP.
uncertain
Copernicus → say → AFP
Not all forecasters use the same scale to interpret El Nino.
asserted
forecasters → use → Nino
On Friday, Japan’s weather agency said that El Nino conditions had reached their “strongest intensity on record”, with temperatures in the phenomenon’s monitoring area 4C above normal.
asserted
conditions → say → normal
As El Nino gathers strength, global average sea surface temperatures hit a record 21.05C for September, topping the previous high of 20.92C for the same month in 2023, according to Copernicus.
uncertain
temperatures → gather → Copernicus
Overall, the world experienced its second hottest September on record, with surface air temperatures averaging 16.27C, the EU service said.
asserted
service → experience → 16.27C
September was 1.63C hotter than the pre-industrial average, a period defined as 1850-1900.
asserted
September → define → 1850
Nations agreed at the 2015 UN climate talks in Paris to keep global warming “well below” 2C above pre-industrial levels, while pursuing efforts to limit it to 1.5C, in order to limit the effects of climate change.
But the United Nations declared in September that the long-term 1.5C target would be missed in a matter of years.
asserted
target → agree → years
“We are in a new run of months above 1.5C, and with a strong El Nino still intensifying it is likely to last into 2027,” Copernicus director Carlo Buontempo said in a statement.
asserted
Buontempo → intensify → statement
“Crossing the Paris Agreement’s long-term limit is only a matter of time.
asserted
Crossing → cross → time
How far we overshoot, and for how long, is still up to us,” he said.
asserted
he → overshoot → us
Scientists say it is crucial to reduce greenhouse gas emissions from fossil fuels to limit the period of “overshoot” above 1.5C and bring temperatures back down as quickly as possible.
asserted
it → say → temperatures
Experts have warned that this El Nino would likely push global temperatures to a new record in 2027.
asserted
Nino → warn → 2027
El Nino warms surface temperatures in the central and eastern equatorial Pacific Ocean, bringing worldwide changes in winds, pressure and rainfall patterns.
asserted
Nino → warm → patterns
It typically takes place every two to seven years and lasts around nine to 12 months.
asserted
It → take → months
The Aporia
