43 billion euros’ worth of damage in just one summer? That’s only the beginning.
09.07.2026
Why a Summer of Extreme Weather Will Cost Europe Billions for Years to Come
The summer of 2025 is etched into Europe’s memory. Heat waves that turned cities into ovens and torrential rains that flooded entire regions. A similar picture is already emerging for 2026. By the end of June, Europe is already suffering from a historic heat wave.
While society, the media and politicians are largely discussing the impact of extreme weather on people, animals and nature, the joint research team of Sehrish Usman (University of Mannheim) and Miles Parker and Mathilde Valat from ECB has also asked an important 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 most of us realize. When the media talks about “economic losses”—for example, due to a flood—this usually refers only to direct physical damage: destroyed buildings, roads, or machinery. This definition, which originates from the insurance industry, is misleading because it captures only a fraction of the true damage. The research team demonstrates that this direct damage is just the tip of the iceberg. Extreme weather events are a slow-acting poison for our economy, the full impact of which only unfolds over the course of years.
In their study, the researchers assess the loss in gross value added (GVA)—put simply, the total economic activity—and thus also indirect, hidden, and long-term costs.
Heat waves are a perfect example. They cause hardly any direct physical damage to buildings. Yet their economic damage is immense: productivity in the construction industry plummets because workers can no longer work safely at 40 degrees. Restaurants and hotels suffer from fewer tourists, and the agricultural sector struggles with crop failures. All these losses are captured by the loss in gross value added.
43 Billion Euros Today, 126 Billion Tomorrow: Why the Damage Is Growing
The study shows that for the year 2025 alone, researchers estimate losses in gross value added (GVA) in the affected European regions at 43 billion euros. What is alarming about the researchers’ findings is that the economic consequences of a single extreme summer are not only enormous but they 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
It is important to note, as the authors point out, that these figures quantify the losses in the affected regions and, due to complex spillover effects, cannot be directly extrapolated to the EU’s total gross domestic product. However, the local impact is extreme: for individual regions—for example, in Greece—the droughts are projected to result in a loss of nearly 3% of their annual economic output by 2029. A single weather event can thus trigger a regional recession. At the same time, the economic consequences of extreme weather do not stop at the borders of the affected region. Due to Europe’s tightly interconnected supply chains, local disasters trigger cascading disruptions throughout the entire economic area.
Moreover, public finances are suffering a double blow. On the one hand, tax revenues are falling as economic activity declines and corporate profits plummet. On the other hand, government spending is skyrocketing as funds are needed for emergency aid, reconstruction, and increased social benefits such as unemployment benefits. This fiscal dilemma reduces the leeway for other important investments in education, infrastructure, or health care and may increase public debt in the long term.
The authors of the analysis explicitly describe their own estimates as conservative. The actual economic burden is highly likely to be even greater. The figures presented represent more of a lower bound for the damage.
The central message is unmistakable: in addition to human suffering and environmental destruction, climate change also causes far-reaching, hidden, and long-term damage to the global economic system. This damage is evident not only in insurance balance sheets but also in the long-term economic performance of entire regions, in national budgets, and in the consumer prices we face every day.
The figures show that, from an economic perspective, the question regarding climate change is no longer whether we can afford to adapt, but rather whether we can afford not to act.