**Hottest June on Record in Western Europe as Heatwaves Hit Continent**
*Published on July 9, 2026*
Western Europe has experienced its hottest June on record, with average temperatures soaring more than three degrees Celsius (5.4 degrees Fahrenheit) above the 1991-2020 average, according to the European Union’s Copernicus Climate Change Service. The average temperature for the region reached 20.74 degrees Celsius (69.33 degrees Fahrenheit), driven primarily by a significant heatwave that impacted several countries during the latter half of the month.
This unprecedented heat event has been characterized as a “heat dome,” a meteorological phenomenon where a high-pressure system traps heat in a specific area, leading to extreme temperatures. The June heatwave has raised concerns about the increasing frequency and intensity of such weather patterns, which are becoming more common as Europe continues to warm at a rapid pace.
Globally, the average temperature for June was recorded at 16.54 degrees Celsius (61.77 degrees Fahrenheit), which is 0.56 degrees Celsius (1 degree Fahrenheit) above the average for the same month from 1991 to 2020. Additionally, June 2026 was found to be 1.39 degrees Celsius (2.5 degrees Fahrenheit) warmer than the estimated pre-industrial average for June, calculated from the years 1850 to 1900.
The heatwave has had dire consequences across the continent, with thousands of deaths reported, particularly in France, Spain, and Belgium. An analysis indicated that over two-thirds of Europeans—approximately 410 million people—experienced temperatures exceeding 35 degrees Celsius (95 degrees Fahrenheit) during this period. High humidity levels exacerbated the situation, preventing nighttime relief from the heat and leading to numerous “tropical nights,” where temperatures remain uncomfortably high after sunset.
Samantha Burgess, the strategic climate lead at the European Centre for Medium-Range Weather Forecasts (ECMWF), noted that the extreme humidity was a significant factor in the intensity of the heatwave. The combination of high temperatures and humidity created conditions where residents struggled to find respite from the heat.
In addition to the health impacts, the heatwave has raised concerns about environmental consequences. Dry conditions in southwestern Europe have heightened the risk of drought and wildfires, particularly in the Iberian Peninsula and southern France. The Mediterranean region has also been affected by a marine heatwave, with ocean temperatures reaching record levels, further complicating the climate situation.
The average sea surface temperature across oceans outside the polar regions reached 20.86 degrees Celsius (69.55 degrees Fahrenheit) in June, marking the highest temperature ever recorded for that month. This increase in ocean temperatures can disrupt marine ecosystems and contribute to the overall warming trend experienced on land.
The Copernicus Climate Change Service regularly compiles data on global surface temperatures, sea ice, and precipitation, utilizing a combination of satellite observations, ships, aircraft, and weather stations worldwide. The findings from June 2026 serve as a stark reminder of the ongoing challenges posed by climate change and the urgent need for adaptive strategies to mitigate its impacts.
As Europe grapples with the realities of climate change, the recent heatwave underscores the importance of understanding and addressing the factors contributing to extreme weather events. With rising temperatures and changing atmospheric conditions, the continent faces an uncertain future, necessitating concerted efforts to combat climate change and protect vulnerable populations and ecosystems.