The Cost of Heatwaves in Europe in 2026: Worker Productivity and Economic Impact

By August this year, economists were already predicting that that extreme heat which affected much of Europe over the summer months could cost EU economies around €180 billion in 2026, roughly 1% of GDP. The consecutive heatwaves across western Europe since May broke historical temperature records across regions, with France, Germany and Spain repeatedly recording scores of over 40C.

According to research published by the Dutch Triodos Bank, the damage caused by both the heatwaves and rampant wildfires has already impacted the agriculture, energy and transport sectors, while labour productivity has also been affected, as explored in the WageIndicator article How extreme heat is changing the working day.

Financial cost of high temperatures on agriculture, energy and transport sectors - and humans

Crop failures and food inflation

Farmers, already hit by high temperatures in 2024 and 2025, are once again paying a high price. The Guardian estimates that the 2026 heatwave has cost the continent’s grain farmers around €2bn in lost revenue. It has also destroyed 9m tonnes of crops - which will potentially have a large impact on the price of food. The reduction of 9m tonnes means the 27 EU member states and the UK will record their smallest harvest since 2018. The lost harvest is expected to increase Europe’s reliance on grain imports, putting further pressure on global commodity prices.

Power grid and transport strain

On the energy front, extreme heat and drought are disrupting Europe’s nuclear power plants, with extraordinary steps being taken to keep energy supplies running. Low water levels on river systems - crucial in the nuclear cooling system - have caused some governments to shut plants down, or even, in the case of the Cernavoda Nuclear Power Plant in Romania, to blast the Danube River with explosives to deepen water channels. European governments are now considering a range of measures to help nuclear power plants cope with heatwaves and shallow water levels.

The low water markers on the Danube as well as the Rhine, which are key cargo arteries, have also affected transport and traffic. ING (Internationale Nederlanden Groep) estimates that disruptions to Rhine traffic alone could reduce Germany’s GDP by 0.3 percentage points this year.

Labour productivity loss

One of the most significant impacts of extreme heat is also one of the most difficult to measure: its effect on workers’ productivity. As temperatures rise above around 25°C to 30°C, the amount of work people can complete tends to decline, with outdoor and physically demanding workers particularly affected. But the impact is not limited to manual labour. Heat can also affect office workers by disrupting sleep, reducing concentration and impairing cognitive performance.

Human cost

In addition, there have been an estimated 35 000 deaths attributed to “heat-related mortality” across Europe (although final numbers could take weeks or even months, as many countries have yet to release figures even for early August). Individuals aged 65 and older, as well as those living in areas unequipped for extreme air conditioning or sustained high temperatures, faced the highest spikes in mortality.

How extreme heat is hitting households

What is clear is that Europe’s extreme heatwaves are hitting households in several ways:

• Rising demand for cooling increases summer electricity bills.
• Crop failures put upward pressure on food prices.
• Disrupted transport and supply chains add another layer of costs.
• Workers lose hours they cannot afford.

Southern Europe and major industrial hubs are bearing some of the biggest economic impacts.

New research from Climate Analytics, shows that the combination of heat and drought is already costing European households, with average incomes falling by almost 3% as a result.

The financial consequences could become far more severe as temperatures rise. Under current global policies, which put the world on course for around 2.7°C of warming by 2100, average household incomes in Europe could decline by as much as 27%. Keeping global warming within the Paris Agreement’s 1.5°C target would significantly reduce the impact, with the projected loss falling to around 7%.

Extreme heat and the financial future

Europe’s summer of extreme heat has shown that the cost of climate change is already being felt in household budgets. From higher electricity and food prices to disrupted transport and lost working hours, rising temperatures are adding to the cost of living while putting pressure on economies and workers alike. This ultimately has an effect on Living Wages, as well.

The €180 billion projected hit to EU economies in 2026 is a stark reminder that heatwaves carry a price tag far. And as Climate Analytics warns, those costs could escalate dramatically as temperatures rise. For European households, the question is no longer whether extreme heat will affect the cost of living, but how much more it will cost if temperatures continue to climb.