Technology and Science10 September, 20262 min read
Copernicus Climate Change Service Says August 2026 Tied Earth’s Hottest Month Record
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Global average temperature in August 2026 reached 16.96°C, tying the July 2023 record. Copernicus reports August 2026 joint hottest month due to climate change and El Niño.
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Record Heat, Paris Limit
August 2026 was the world’s joint-hottest month on record, with the European Union’s Copernicus Climate Change Service (C3S) saying global temperatures reached 1.65C above pre-industrial levels. Reuters reported that the month tied with July 2023 as the warmest month on record, with an average global surface air temperature of 16.96 C. The BBC said the record was driven by climate change and the rising influence of El Niño, pushing temperatures for the month 1.65C above pre-industrial levels and capping western Europe’s warmest summer past the deadly heat of 2003.
Copernicus-linked reporting described August as the first month since November 2025 to exceed 1.5°C, with the extra-polar oceans also breaking a record for their average temperature last month. In Brussels, Reuters said the world’s oceans outside the polar regions recorded their joint-highest sea surface temperature for any month on record, as El Niño conditions strengthened in the tropical Pacific.
Voices on Causes
Samantha Burgess, strategic lead at the European Centre for Medium-Range Weather Forecasts, said the impact across Europe included "roads melting, train lines buckling, schools closing, hospitals completely overwhelmed, and record wildfires for the time of year". The BBC quoted Burgess describing August as "a remarkable month in the global climate record", and said its impacts had been "increasingly being felt by communities, economies and ecosystems across the world". UN climate chief Simon Stiell told a European parliament committee that "The climate crisis is now a continent-wide economic security emergency," and warned that political polarisation over climate action was not in voters’ interests.
Stiell also framed the fossil-fuel link directly, saying "To be soft on climate action is to be soft on inflation, and the cost of living". Copernicus reporting tied the heat to both oceans and atmosphere, saying record sea surface temperatures were due to "global heating from burning fossil fuels" and rapidly increasing SSTs in the equatorial Pacific associated with strong El Niño conditions.
What Comes Next
Reuters said the world has not yet technically breached the Paris Agreement’s 1.5 C target, because the target refers to an average temperature over decades rather than a temporary peak. The BBC added that while a single month above 1.5C does not mean it has been permanently crossed, it shows a trend towards breaching that limit. The Guardian reported that Stiell warned this summer’s heat, fires and droughts would seem mild compared to a "permanent climate nightmare" if humanity does not cut fossil fuel pollution.
Reuters said the U.N. urged governments to cut CO2 emissions faster to limit overshooting the target, and noted that the long-term warming level was about 1.4 C above pre-industrial levels. In the same Reuters report, Copernicus data were said to go back to 1940 and be cross-checked with global temperature records going back to 1850, as El Niño was forecast to strengthen and potentially push global temperatures further.