Summary of Key Points
In July 2026, Western Europe experienced record-breaking prolonged heat and drought, compounded by record-high global sea surface temperatures and an intensifying El Niño phenomenon. This led to frequent wildfires and dried-up rivers, directly impacting essential services and economic sectors such as water supply, irrigation, energy production, and inland shipping. This is a classic example of how extreme weather events exacerbate each other under the influence of climate change: high temperatures worsen drought, which in turn allows more heat to accumulate, triggering even more severe wildfires and ecological problems.
1. How extreme was the heat in Western Europe this summer?
This year’s heat in Western Europe wasn’t just a few days of warmth; it lasted for three consecutive months. The average temperature in June and July reached 21.62°C, nearly 2.8°C higher than the long-term average, breaking the record set in 2022. Since May, there have been four heatwaves. Although the last two waves in July were less intense than those in June, the frequency was the critical factor—three months of extreme heat effectively trapped the region under a “heat dome” created by high-pressure systems that prevented cool air from entering. Worse still, the drier soil made it harder for the temperature to drop, creating a vicious cycle of “heat → drought → even more heat.”
2. Rivers dried up, affecting daily life and the economy
European waterways such as the Seine, Rhine, and Danube have seen flow levels far below average. The consequences are immediate and significant:
- Water supply and irrigation: Parts of France and Spain are facing record-low soil moisture, leading to water shortages for crops and potential water scarcity for residents.
- Energy production: Many hydroelectric power plants rely on river water for generation; reduced flow means lower electricity output. Nuclear power plants also need river water for cooling, and low water levels can disrupt operations, increasing energy supply challenges.
- Inland shipping: The Rhine is one of Europe’s busiest shipping routes. With low water levels, large ships cannot pass, forcing them to reduce cargo capacity or stop operating, significantly increasing transportation costs (for example, coal and chemical shipments in Germany are affected).
3. Wildfires spread rapidly, with smoke affecting vast areas
The area affected by wildfires and the amount of smoke emitted this year in Western Europe were both exceptionally high. Climate change has made southern Europe, which is already prone to fires due to its hot and dry conditions, even more vulnerable. It has also extended the fire season northward (countries like Germany and the UK, which previously rarely experienced major wildfires, are now being affected). Additionally, the smoke from these fires can rise into the atmosphere and be carried by winds over long distances, impacting air quality, visibility, and residents’ health in distant areas.
4. Global sea surface temperatures hit new highs, with El Niño adding to the chaos
The situation is not limited to Europe; worldwide, ocean surface temperatures in July were 0.07°C higher than the record set in 2023. The El Niño phenomenon in the tropical Pacific is intensifying (meaning the Pacific Ocean’s water is getting hotter, disrupting the global climate). The temperatures in the Atlantic and western Mediterranean seas around Europe also broke July records. This warm water further exacerbates the heat and drought in Europe by creating conditions that are more conducive to heatwaves and making it harder for land to cool down.
5. Climate change makes extreme weather events more intertwined
This is not just about high temperatures or drought; it’s a combination of factors: high temperatures dry out the soil and rivers, reducing the natural cooling effect of evaporation; drought makes vegetation more flammable, leading to more wildfires; and the smoke from wildfires can further affect the climate. As Burgess stated, this is a typical outcome of climate change—extreme weather is no longer a random event but a self-reinforcing pattern that is likely to become more frequent and severe in the future.
In summary, the extreme weather in Western Europe is not just a natural disaster; it’s a reality we must confront due to climate change. It affects our daily lives, disrupts economic supply chains (such as shipping and energy), and may even change the way we live.