Agriculture has taken a measurable blow. The June heatwave alone knocked an estimated €2 billion off European grain harvest prospects, destroying 10 million tonnes of forecast production. By July, maize and sunflower yields were already down 6–7%. Wider losses across livestock and vegetables are not yet counted.
Wildfire restoration costs in the five worst-hit eurozone countries — France, Spain, Portugal, Greece and Romania — have surpassed €3.1 billion in the first two months of the season, exceeding the European Commission's average annual benchmark for the entire EU. In France's Gironde region, fires halted production at Safran, Dassault Aviation and ArianeGroup, shutting 19,500 businesses and placing up to 150,000 workers on state-subsidised short-time work.
The human toll is feeding directly into economic output. Germany alone reported more than 10,000 heat-related deaths; across Europe, late June's heatwave killed over 14,000 people. A macroeconomic modelling study covering 15 eurozone nations estimated an aggregate productivity loss of 1.4% of regional GDP, with emergency healthcare deployment adding a fiscal burden of €18.2 billion.
Insurers are recalibrating. Allianz projects that if the five hottest years of the past decade repeat through 2030, France, Italy, Germany and Spain could face cumulative GDP losses of 5–7% — a $638 billion hit across the four economies. France alone has €211 billion of economic output at risk through 2030, the largest exposure in Europe.