Europe has just experienced its worst summer ever recorded.

Omissions

• Pan-European ranking: averaged over European land, summer 2026 ranked third-warmest in the ERA5 record, behind at least two earlier summers — the claim's 'worst ever' framing omits this.
• The record is geographically selective: the all-time summer record applies to western Europe specifically (21.69°C, +2.54°C), not to Europe as a whole.
• Monthly detail cuts against a uniform record: June 2026 was the second-warmest June and August the fourth-warmest August over European land, while July ranked only 11th warmest.
• 'Worst' is a composite of impacts (heat stress, drought, low river flows, wildfires) that Copernicus reports as record-breaking in several dimensions; the claim mixes a genuine record in heat-stress exposure with an inaccurate all-time temperature ranking for the continent.

Sources

• PrimaryCopernicus Climate Change Service — European Summer 2026: Records, Extremes and Context (Summer Review 2026, PDF)"Summer 2026 was the warmest on record for western Europe, with an average surface air temperature of 21.69°C, or 2.54°C above the 1991–2020 average."
• PrimaryCopernicus Climate Change Service — Record heat stress and low river flows marked Europe's 2026 summer"Europe's summer was defined by extreme heatwaves and dry conditions, with a record 52% of the continent exposed to 'very strong' heat stress"; "Western Europe experienced its warmest summer on record, with an average temperature of 21.7°C, 2.5°C above the 1991–2020 average."
• PrimaryCopernicus Climate Change Service — Surface air temperature for August 2026"The high ranking for summer 2026 reflects the second-warmest June and fourth-warmest August. By contrast, July ranked only 11th warmest"; "The average temperature over European land in August 2026 was 20.26°C, 1.10°C above the 1991–2020 average for the month, making it the fourth-warmest August."
• SecondaryProClim / Swiss Academy of Sciences — European Summer 2026: Records, Extremes and Context (summary citing Copernicus)"Averaged over European land, summer 2026 (June–August) was 1.17°C warmer than the 1991–2020 average, making it the third-warmest summer for Europe in the ERA5 [record]."