43 Billion Euros’ Worth of Damage in Just One Summer? That’s Only the Beginning
09.07.2026
The summer of 2025 left a lasting mark on Europe. Heat waves turned cities into ovens, while torrential rains flooded entire regions. A similar pattern is already emerging in 2026. By the end of June, Europe is once again experiencing a historic heat wave.
Public debate has largely focused on the impact of extreme weather on people, wildlife, and ecosystems. But research by Dr. Sehrish Usman (University of Mannheim) together with Miles Parker and Mathilde Valat of the European Central Bank asks a different question: what is the economic cost of these disasters?
More than just destroyed homes: The hidden costs of extreme weather
The answer is far more alarming than conventional estimates suggest. When media reports refer to the “economic losses” caused by floods or other disasters, they usually focus on direct physical damage such as destroyed buildings, roads, or machinery. This insurance-based definition captures only part of the true economic impact.
The researchers show that these direct losses represent only a fraction of the overall costs. Extreme weather also causes substantial indirect and long-term economic damage that unfolds over several years. Rather than focusing solely on physical destruction, the study measures losses in gross value added (GVA)—a broad indicator of economic activity that captures these hidden effects.
Heat waves illustrate this particularly well. They rarely destroy buildings or infrastructure, yet their economic consequences are considerable. Construction productivity declines because working safely in extreme temperatures becomes impossible. Restaurants and hotels experience fewer visitors, while agriculture suffers from lower crop yields. These effects are reflected in the loss of gross value added.
43 billion euros today, 126 billion tomorrow: Why the damage is growing
The researchers estimate that extreme weather in 2025 alone will result in 43 billion euros in gross value added (GVA) losses across the affected European regions. What is alarming about the researchers’ findings is that the economic consequences of a single extreme summer are not only enormous but continue to increase over the years.
Based on historical data, the annual economic loss in these same regions is projected to rise to 126 billion euros by 2029, even assuming that no further extreme weather events occur in the following years. This clearly refutes previous assumptions that the costs of a natural disaster are highest shortly after the event and then gradually subside.
The aftereffects, such as disrupted supply chains, long-term productivity losses, workforce migration, and the strain on corporate balance sheets, only unfold their full impact over the course of years.
Supply chains, public finances, regions: The long-term consequences for Europe’s economy
The authors emphasize that these figures represent losses within the affected regions and cannot simply be extrapolated to the European Union's total GDP because of complex spillover effects. Even so, the regional impact is substantial. In some areas, such as parts of Greece, droughts are projected to reduce annual economic output by nearly 3% by 2029.
In other words, a single extreme weather event can push a region into recession.
The economic effects also extend far beyond the regions directly affected. Europe's tightly integrated supply chains mean that local disruptions can spread throughout the wider economy, affecting businesses and consumers far from the original disaster.
The hidden costs for governments
Public finances face a double burden. As economic activity weakens and corporate profits fall, tax revenues decline. At the same time, governments must increase spending on emergency relief, reconstruction, and social support such as unemployment benefits. This combination reduces fiscal room for investment in areas such as education, infrastructure, and healthcare, while potentially increasing public debt over the longer term.
The researchers stress that their estimates should be regarded as conservative. The true economic burden of extreme weather is likely to be even higher than the figures presented.
The central conclusion is clear. Beyond the human suffering and environmental destruction they cause, extreme weather events impose high hidden and long-lasting costs on the economy. These costs are reflected not only in insurance claims, but also in the long-term performance of regional economies, government budgets, and ultimately the prices consumers pay.
From an economic perspective, the question is no longer whether societies can afford to adapt to climate change, but whether they can afford not to act.