Extreme Heatwave Grips Europe

A record-breaking heatwave has gripped much of Europe this week, with temperatures exceeding 40°C (104°F) in parts of Spain, Italy, and France, according to the European Union’s Copernicus Climate Change Service and national meteorological agencies. As of June 23, 2026, at least 12 countries have issued extreme heat warnings, and emergency services in southern Europe report a surge in heat-related illnesses, including 37 confirmed cases of heatstroke in Spain alone. The World Health Organization (WHO) regional office has warned that mortality rates could rise sharply if current trends persist.

Why is this heatwave so severe?

Meteorologists attribute the intensity to a persistent high-pressure system over the Mediterranean, combined with unusually warm sea surface temperatures. The Copernicus Service reported that sea temperatures in the western Mediterranean are now 2°C above the 1991–2020 average, fueling the heat dome. “This is not just another heatwave—it’s a climate emergency in real time,” said Carlo Buontempo, director of Copernicus, in a statement released June 22. “The data show we are entering a new era where such extremes become the norm rather than the exception.”

Comparisons with past events underscore the severity. The 2022 European heatwave, which killed over 60,000 people according to a study published in Nature Medicine, saw peak temperatures of 45°C in parts of Italy and Spain. This year’s heatwave, however, is spreading farther north earlier in the season, with Germany and Poland also experiencing temperatures 10°C above average for this time of year.

Which countries are most affected, and what are the immediate risks?

Spain’s national weather agency, AEMET, has issued red alerts for Andalusia, Murcia, and parts of Castilla-La Mancha, where temperatures are expected to reach 44°C by June 25. In Italy, Rome’s civil protection agency has activated emergency cooling centers, reporting a 40% increase in hospital admissions for dehydration and heat exhaustion since June 20. France’s Météo-France has warned that the southwest region could see temperatures surpassing 42°C, prompting schools in Bordeaux to cancel outdoor activities.

Greece, still recovering from last summer’s devastating wildfires, has declared a state of emergency in Attica and the Peloponnese, where firefighters are on standby for potential flare-ups. The Greek Fire Service stated June 23 that 18 wildfires have already been reported this month, double the average for this time of year.

Northern Europe is not spared. Germany’s Deutsche Wetterdienst (DWD) has issued heat advisories for Berlin, Hamburg, and Munich, with temperatures expected to hit 35°C—unusual for June. The German Red Cross reported June 22 that heat-related calls to its emergency hotline have surged by 60% since Monday.

How are governments and agencies responding?

Italy’s government has activated Phase D of its National Civil Protection Plan, the highest alert level, allowing regional authorities to deploy military personnel to assist in evacuations and distribute water supplies. Prime Minister Giorgia Meloni announced June 23 that €50 million in emergency funding would be allocated to affected regions, with a focus on protecting vulnerable populations such as the elderly and migrant communities.

In Spain, regional presidents have called for a temporary suspension of outdoor work permits for vulnerable groups, while Madrid’s mayor has ordered the city’s 1,200 public fountains to remain open 24 hours to provide cooling relief. France’s President Emmanuel Macron has convened an emergency meeting with energy ministers to assess power grid strain, as air conditioning demand spikes.

The European Commission’s Joint Research Centre (JRC) has warned that prolonged high temperatures could strain water supplies across the continent. The JRC’s latest briefing, released June 21, noted that reservoirs in Portugal and southern Spain are at 30% capacity, below the critical threshold for agricultural and municipal use.

What are the long-term consequences, and what’s next?

Climatologists warn that this heatwave is a harbinger of more frequent and intense extreme weather events. Friederike Otto, senior lecturer at Imperial College London and a lead author on the IPCC’s latest report, stated in a New Scientist interview June 23 that “the probability of such heatwaves has increased by at least 50% due to human-caused climate change.” She added that without drastic emissions cuts, Europe could see “once-in-a-century” heatwaves every decade by 2050.

For now, forecasters predict the heat dome will begin weakening by June 26, with cooler Atlantic air pushing into the region. However, the EU’s Copernicus Service has issued a warning that another heatwave could follow within weeks, as the jet stream remains unusually weak.

In the meantime, public health officials are urging residents to follow strict heat safety protocols: stay hydrated, avoid peak sun hours, and check on neighbors, particularly the elderly. The WHO’s Europe office has released a detailed heat action plan, emphasizing the need for communities to prepare for extended periods of extreme heat.