Read the full story in the New York Times.
Two months ago, France experienced its hottest May on record, with record highs in some cities. Last month, France was blistered again, by a spring heat wave that also affected Spain, Italy and other countries. Then, this month, Poland and other parts of Eastern Europe suffered during a spell of extreme heat.
Now temperatures across Europe are soaring yet again, at or near triple digits from Spain to the British Isles and spreading east. Wildfires stoked by the heat are burning in many countries, and much of the continent is in the throes of a lengthy drought.
And there are still two months of summer left.
Scientists say the persistent extreme heat already this year is in keeping with a trend. Heat waves in Europe, they say, are increasing in frequency and intensity at a faster rate than almost any other part of the planet, including the Western United States.
Global warming plays a role, as it does in heat waves around the world, because temperatures are on average about 2 degrees Fahrenheit (1.1 degrees Celsius) higher than they were in the late 19th century, before emissions of carbon dioxide and other heat-trapping gases became widespread. So extreme heat takes off from a higher starting point.
But beyond that, there are other factors, some involving the circulation of the atmosphere and the ocean, that may make Europe a heat wave hot spot.