The French city of Bordeaux has hit its highest temperature since records began, as Western Europe braces for the second heatwave to hit this summer, reports BBC News.
On Tuesday, Meteo France registered 41.2C (106.1F) in the south-western city, breaking a 2003 record of 40.7C.
Forecasters predict a record-breaking run across Europe this week, including Belgium, Germany and the Netherlands.
A World Meteorological Organization (WMO) spokeswoman said the heatwaves bore "the hallmark of climate change".
"As we saw in June they are becoming more frequent, they're starting earlier and they're becoming more intense," Claire Nullis added. "It's not a problem that's going to go away."
Much of France has been issued with an orange alert - the second highest level of warning.
Meteo France said Paris temperatures might hit new highs on Thursday. The record, set in 1947, stands at 40.4C.
Comparisons have been drawn to a heatwave France experienced in August 2003, during which heat contributed to almost 15,000 deaths.