Professional services firm Aon said that Storm Éowyn last year led to industry losses of an estimated €661m.
The Aon analysis that reveals Éowyn was the costliest windstorm on record in Ireland, with final losses of more than double initial industry estimates last year.
Aon said the scale of the losses, driven by widespread property damage, business interruption and infrastructure disruption, underscores the growing impact of severe weather events and climate risk on Irish businesses and the wider economy.
Findings from its global risk management survey show that weather/natural disasters is ranked ninth in the top current risks facing Irish business indicating that other concerns are being prioritised by decision makers.
Global economic losses from natural catastrophes in 2025 reached $260 billion, underscoring the scale of disruption, it added.
Peter Brady, Head of Risk Capital at Aon Ireland, said the impact of weather and climate risk on the Irish economy is intensifying, with major consequences for businesses that fail to adapt.
"Storm Éowyn was not an outlier. It is a signal of the growing financial impact of climate change on Irish businesses and the broader economy," he stated.
"As the costliest windstorm on record in Ireland, Éowyn's impact reflects a new reality where climate risk cannot be considered a secondary concern, but is an accelerating, material business risk that can have severe consequences for businesses that are unprepared," Mr Brady said.
"It is concerning that many decision makers in Ireland are still not prioritising climate risk, according to our global risk management survey. Organisations that do not adapt to this evolving environment will face increasing operational, financial and reputational exposure," he added.
