Global temperatures hit record highs as El Niño strengthens: Report

The report said that August 2026 was a "remarkable month in the global climate record" and marks the first record-breaking month for global temperatures since January 2025.

It was not only the warmest August on record, but the joint-warmest month for the planet across all calendar months, tied with July 2023, according to the organization's dataset, which begins in 1940.

Last month was also the first month since November 2025 to register more than 1.5 degrees Celsius warmer than the 1850-1900 pre-industrial average, reaching 1.65 degrees Celsius.

The 1.5-degree Celsius, 2.7-degree Fahrenheit, warming limit was established in the 2015 Paris Agreement and is a threshold climate scientists view as critical for avoiding the worst impacts of human-amplified climate change.

"Combined with record global sea surface temperatures and the warmest summer on record for Western Europe, these observations show how climate change is driving extremes across both the atmosphere and the oceans," Samantha Burgess, deputy director of the Copernicus Climate Change Service, said in a statement.

"The impacts of these conditions are increasingly being felt by communities, economies and ecosystems across the world," she added.

In the United States, a new report from the National Oceanic and Atmospheric Administration (NOAA) found that meteorological summer, which lasts from June to August, was the warmest summer on record, surpassing 1936 and 2021.

Record highs in global average temperature often occur during El Niño years, but the phenomenon isn't the sole reason for the record-breaking warmth, climate scientists say.

Short-term El Niño temperature spikes occur on top of the long-term global warming trend, which is primarily driven by human-caused greenhouse gas emissions.

Last month, global sea surface temperatures reached an all-time high, as El Niño conditions continued to strengthen across the central and eastern equatorial Pacific, and marine heatwaves persisted around the world.

On Aug. 22, the daily average global sea surface temperature between 60 degrees south and 60 degrees north reached 69.98 degrees Fahrenheit, the highest value on record, according to Copernicus.

It surpasses the previous record of 69.96 degrees Fahrenheit set in February and March 2024, during the last El Niño event. Global sea surface temperatures also reached a record for August, setting a new monthly record for the second consecutive month.

"This record is another clear signal of an ocean under growing stress. El Niño is adding heat to the system, but it is doing so on top of decades of human-driven warming," Burgess said.

The meteorological summer in Western Europe brought exceptionally early, persistent and intense heat waves across the region and ranked as the warmest summer on record, surpassing 2003.

The prolonged hot and dry conditions fueled devastating wildfires throughout the summer months.

Over the summer season, conditions were much drier than average in western and central Europe, southern Scandinavia and southeastern Europe, with water levels in several major rivers dropping dramatically and disrupting water supplies, irrigation and energy production in several countries.