Europe’s Violent Storms Could Cost Insurers Billions, Warns Aon
Europe’s recent storms are expected to trigger hundreds of millions of euros in insured losses, with Aon warning that total economic damage could reach the low single-digit billions.
Aon estimates Europe's latest severe storms could cause hundreds of millions of euros in insured losses and billions in economic damage, with France among the hardest-hit countries.
Global Insurance News: Europe’s latest spell of severe thunderstorms could result in insured losses worth hundreds of millions of euros, with total economic losses potentially reaching the low single-digit billions, according to global insurance broker Aon.
The storms swept across large parts of Europe between June 27 and July 1, following an intense heatwave that created ideal conditions for violent weather. While several countries were affected, France suffered the greatest damage, with severe storms also hitting Belgium, the Netherlands, Germany, Switzerland, Austria, Czechia, Poland, Slovakia, Italy and Romania.
Hail and High Winds Leave a Trail of Damage
According to Aon, large hailstones, destructive winds, torrential rainfall, flash flooding and lightning caused widespread damage to homes, businesses, vehicles and crops.
The worst-hit areas included Île-de-France, particularly Val-d’Oise and Yvelines, where hailstones measuring up to 8 centimetres in diameter battered properties and agricultural land. The storms also disrupted transport services around Paris, while approximately 63,000 households temporarily lost electricity due to fallen trees and damage to power infrastructure.
Across the continent, emergency services responded to hundreds of weather-related incidents as powerful thunderstorms uprooted trees, damaged buildings and caused localized flooding.
Losses Expected to Mount
Aon estimates that the storms will generate hundreds of millions of euros in insured losses, while overall economic losses could climb into the low single-digit billions of euros as damage assessments continue.
“Given the reported damage across multiple European countries, the recent stretch of thunderstorm activity is expected to cause substantial economic and insured losses, likely to reach hundreds of millions of euros or potentially more on an aggregated basis, with most losses concentrated in France,” the company said.
At least three people were killed during the storms in Belgium, Austria and Romania after falling trees and other weather-related incidents. Dozens more were injured.
Extreme Weather Becoming Costlier
The latest event highlights the growing financial impact of severe convective storms—a category that includes thunderstorms, hail and tornadoes.
In its 2026 Climate and Catastrophe Insight Report, Aon said severe convective storms have become the costliest insured natural peril of the 21st century, overtaking tropical cyclones. The company estimates that these events caused US$61 billion in insured losses globally during 2025, making it the third-costliest year on record for such disasters.
As Europe experiences more frequent heatwaves followed by violent thunderstorms, insurers are expected to face rising catastrophe claims and greater pressure on underwriting and risk management.
