NNA News – An unusually early and intense heatwave is sweeping across Europe, pushing temperatures above 40 degrees Celsius in several countries and prompting authorities to issue widespread health warnings as scientists warn that extreme heat is becoming a defining feature of the continent's climate. Millions of people across Southern and Western Europe are experiencing dangerous temperatures as a powerful weather system known as a "heat dome" traps hot air over large parts of the continent.

France has placed 49 departments under its highest-level red heat alert, while Italy has issued severe warnings for several major cities, including Rome, Milan, Florence and Bologna. Temperatures have exceeded 40 degrees Celsius in parts of Spain, Portugal and Italy, while Germany and Belgium have approached long-standing June records.

Meteorologists say the heatwave is being driven by a large high-pressure system stretching across Western and Central Europe. The system is drawing hot air northwards from Africa while preventing cooler Atlantic weather systems from bringing relief. "This phenomenon works like the lid of a saucepan: it traps the heated air and compresses it toward the ground," Belgian meteorologist David Dehenauw explained. "It has never been this hot, for so long, this early in the year," he added. The extreme temperatures have already disrupted daily life across the continent.

In Spain, wildfires near the Madrid-Barcelona corridor disrupted high-speed rail services, causing delays for thousands of passengers. Authorities in Madrid also cancelled a planned public screening of a FIFA Club World Cup match because of concerns over public safety during the heatwave.

France ordered the closure of hundreds of schools and adjusted schedules for many others to protect learners from exposure to the hottest parts of the day. Transport operators also warned that rail infrastructure is coming under increased strain due to prolonged high temperatures. In Germany, emergency services responded after lightning struck a tent camp during a sporting event, while sections of motorway infrastructure suffered heat-related damage, causing significant traffic disruptions.

Health officials across Europe have expressed concern about the impact of prolonged exposure to extreme heat, particularly among older people, children and vulnerable populations. Italian authorities reported a growing number of so-called "tropical nights", where temperatures remain above 25 degrees Celsius overnight, preventing homes and urban areas from cooling down. The heatwave has also significantly increased the risk of wildfires across Southern Europe. Civil protection agencies in Italy, Spain, Portugal and parts of the Balkans have issued warnings as dry vegetation and strong winds create ideal conditions for fires to spread rapidly.

According to European Union data, nearly 900 wildfires have already burned more than 105,000 hectares across member states this year, well above the long-term average. Climate scientists say the current event is part of a broader trend of rising temperatures linked to climate change. German climatologist Friederike Otto warned that continued greenhouse gas emissions are making heatwaves more frequent, more intense and longer lasting. "2026 will certainly be one of the warmest years on record," Otto said.

Scientists are also monitoring unusually warm Mediterranean Sea temperatures, which are several degrees above historical averages. Experts warn that prolonged marine heatwaves could have serious consequences for biodiversity, fisheries and coastal economies. Beyond the environmental impact, economists are increasingly warning about the financial cost of extreme heat. Analysts estimate that recurring heatwaves could reduce economic output, affect productivity, damage infrastructure and increase healthcare costs across Europe.

As temperatures continue to climb, authorities are urging residents to stay hydrated, avoid outdoor activities during peak afternoon hours and check on elderly relatives and vulnerable neighbours. The latest heatwave serves as another reminder of the growing challenges posed by climate change, with experts warning that extreme heat events are becoming more frequent, more disruptive and increasingly difficult for societies to manage.