Western Europe Major Heat Event - May 2026
A significant heat event is forecast to affect western Europe, with temperatures expected to exceed 30C across Portugal, Spain, France and the UK from Friday into the following week. Temperatures are predicted to rise more than 10C above seasonal norms, with new May monthly records expected across hundreds of locations. Peak temperatures of up to 38C are forecast for Spain's Guadiana and Guadalquivir regions, with 32C expected in Paris and London.
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Impact verdict
Medium impact. Extreme heat events across multiple major western European economies can generate significant insured losses through wildfire ignition, energy infrastructure stress, agricultural damage and excess mortality claims, though the event is still in forecast phase and actual loss crystallisation is uncertain.
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