Western Europe recorded more than 10,000 excess deaths during a record-shattering heatwave in late June 2026 [1].
The scale of the mortality highlights the extreme vulnerability of elderly populations to rising temperatures and the increasing frequency of lethal weather events.
Data from 27 European nations was reported via EuroMOMO, a network supported by the World Health Organization and the European Centre for Disease Prevention and Control [2]. Of the total excess deaths, over 9,000 occurred among individuals aged 65 and older [3].
Specific national data indicates the severity of the event in different regions. The Netherlands recorded 900 excess deaths during the heatwave period [4].
Scientists link the event to climate change. Extreme heat can lead directly to heatstroke or aggravate existing respiratory and cardiovascular conditions, factors that contributed to the high death toll during the late June peak [5].
The EuroMOMO network monitors mortality trends across the continent to identify public health threats in real time. This data allows health officials to track how extreme weather events correlate with spikes in mortality across different demographics.
“More than 10,000 excess deaths were recorded during the late-June heatwave.”
The concentration of deaths among the elderly underscores a critical gap in urban infrastructure and public health readiness for extreme heat. As climate change increases the intensity of heatwaves, the reliance on mortality tracking networks like EuroMOMO becomes essential for governments to implement targeted interventions, such as cooling centers and elderly outreach, to prevent similar mass-casualty events.
