EU Scientists: May Was World's Second-hottest on Record

FILE PHOTO: A man sits on a tangle of branches in the Sacramento River while staying cool during a heat wave in Sacramento, California, US May 30, 2025. REUTERS/Fred Greaves/File Photo
FILE PHOTO: A man sits on a tangle of branches in the Sacramento River while staying cool during a heat wave in Sacramento, California, US May 30, 2025. REUTERS/Fred Greaves/File Photo
TT
20

EU Scientists: May Was World's Second-hottest on Record

FILE PHOTO: A man sits on a tangle of branches in the Sacramento River while staying cool during a heat wave in Sacramento, California, US May 30, 2025. REUTERS/Fred Greaves/File Photo
FILE PHOTO: A man sits on a tangle of branches in the Sacramento River while staying cool during a heat wave in Sacramento, California, US May 30, 2025. REUTERS/Fred Greaves/File Photo

The world experienced its second-warmest May since records began this year, a month in which climate change fueled a record-breaking heatwave in Greenland, scientists said on Wednesday.

Last month was Earth's second-warmest May on record - exceeded only by May 2024 - rounding out the northern hemisphere's second-hottest March-May spring on record, the EU's Copernicus Climate Change Service (C3S) said in a monthly bulletin, according to Reuters.

Global surface temperatures last month averaged 1.4 degrees Celsius higher than in the 1850-1900 pre-industrial period, when humans began burning fossil fuels on an industrial scale, C3S said.

That broke a run of extraordinary heat, in which 21 of the last 22 months had an average global temperature exceeding 1.5C above pre-industrial times - although scientists warned this break was unlikely to last.

"Whilst this may offer a brief respite for the planet, we do expect the 1.5C threshold to be exceeded again in the near future due to the continued warming of the climate system," said C3S director Carlo Buontempo.

The main cause of climate change is greenhouse gas emissions from burning fossil fuels. Last year was the planet's hottest on record.

A separate study, published by the World Weather Attribution group of climate scientists on Wednesday, found that human-caused climate change made a record-breaking heatwave in Iceland and Greenland last month about 3C hotter than it otherwise would have been - contributing to a huge additional melting of Greenland's ice sheet.

"Even cold-climate countries are experiencing unprecedented temperatures," said Sarah Kew, study co-author and researcher at the Royal Netherlands Meteorological Institute.

The global threshold of 1.5C is the limit of warming which countries vowed under the Paris climate agreement to try to prevent, to avoid the worst consequences of warming.

The world has not yet technically breached that target - which refers to an average global temperature of 1.5C over decades.

However, some scientists have said it can no longer realistically be met, and have urged governments to cut CO2 emissions faster, to limit the overshoot and the fueling of extreme weather.

C3S's records go back to 1940, and are cross-checked with global temperature records going back to 1850.



Acropolis Trims Hours Again Amid Greek Heatwave

A drone view of the empty Acropolis, after the authorities closed the site for the hottest part of the day, as a heatwave grips Athens, Greece, July 8,  2025. REUTERS/Stelios Misinas
A drone view of the empty Acropolis, after the authorities closed the site for the hottest part of the day, as a heatwave grips Athens, Greece, July 8, 2025. REUTERS/Stelios Misinas
TT
20

Acropolis Trims Hours Again Amid Greek Heatwave

A drone view of the empty Acropolis, after the authorities closed the site for the hottest part of the day, as a heatwave grips Athens, Greece, July 8,  2025. REUTERS/Stelios Misinas
A drone view of the empty Acropolis, after the authorities closed the site for the hottest part of the day, as a heatwave grips Athens, Greece, July 8, 2025. REUTERS/Stelios Misinas

The Acropolis in Athens will limit its operating hours for a second straight day because of heatwave conditions, the Greek culture ministry said Wednesday.

The ministry in a statement said the world-renowned site would be shut till 5:00 pm (1400 GMT) "for the safety of workers and visitors, owing to high temperatures."

The four-day heatwave confirmed by meteorologists began Sunday and is the second to grip Greece since late June.

Temperatures are expected to reach 41 Celsius (105.8 Fahrenheit) on Wednesday, with a maximum of 37 Celsius in Athens, according to national weather service EMY.

The Greek civil protection authority has warned of high fire risk in the greater Athens area, in central Greece and the Peloponnese peninsula on Wednesday.

The heatwave will abate on Thursday.