TL;DR: Europe faced red heat alerts across multiple countries on June 22, 2026, with forecasts above 40°C, and household protection meant pre-cooling homes, securing water and medicines, and knowing heat-illness signs.

Europe Under Red Heat Alerts: How Households Can Prepare for 40°C Days

On June 22, 2026, red heat alerts were in force in France, Spain and other nations across western and central Europe as forecasters warned of highs above 40°C intensifying in the coming days, according to BBC News in “Red heat alerts issued in France, Italy and Spain as 40C temperatures forecast.”

More than half of France’s regions were under the harshest weather warning, with hundreds of schools ordered to close and highs of 42°C hitting Bordeaux on Monday, forecaster Météo-France said.

The United Nations Environment Programme, in “Nine ways to stay cool during a heatwave” published June 22, 2026, reported that temperatures that week soared towards 40°C, prompting heat alerts in 26 countries, according to media reports.

Why June 22 Was a Household Emergency Moment

Forecasters linked the rising temperatures to hot air moving north from the Sahara desert, which was trapping hot air over the affected areas, with conditions that could result in one of the longest heatwaves in recent years.

Scientists have said recurring heatwaves are a marker of global warming, with Météo-France noting that of the 51 heatwaves recorded in France since 1947, 34 have taken place since 2000 and 26 since 2011.

Heatwaves are already responsible for almost 500,000 deaths a year, and are becoming more frequent, more intense and more dangerous, UNEP staff reported.

Temperatures were expected to peak in many parts of the continent on Wednesday, with 41°C forecast for Paris.

Spain’s state weather service Aemet warned of “extremely high” temperatures for the season until Wednesday “between five and 10 degrees above what is typical,” with some areas set to reach 44°C.

Who Faced the Highest Risk

Heat can quickly become a serious health risk, especially for older people, children, outdoor workers, pregnant women and those with underlying health conditions, UNEP reported.

UNEP also listed older adults, young children, pregnant women, people with chronic illness, those living alone and outdoor workers as most at risk.

In the south-west Gironde region, local authorities on Sunday said three people — aged between 80 and 95 years — had died, partly due to the intense heat.

Two children aged two and four were found dead in their family car in the town of Carpentras in the south of France, in an accident being linked to the weather.

The full circumstances of the deaths of the children found in their family car were not yet clear but they had been returning from a shopping trip with their mother and reportedly found themselves stuck inside the family car with the windows shut, amid highs of 39°C.

Ambulance workers tried unsuccessfully to resuscitate the pair.

The local state prosecutor said the precise cause of death had yet to be determined, but “it is probably linked to the heatwave.”

What Governments Ordered for Schools, Travel and Public Events

Some 845 schools in France were shut, while a further 1,800 were allowing pupils to finish classes early, the education ministry said.

More than a million high school students were to take their oral final exams for the baccalaureate amid the heat.

A red heat alert is the highest of four warnings issued by Météo-France, and advises people to exercise extreme caution in conditions that are potentially life-threatening.

Dozens of other regions in France were under an orange alert — the second-highest warning — with an estimated 63 million people in total affected across the country.

In Paris on Monday, several train lines also reduced services, and France’s national railway operator SNCF urged “vulnerable” people to avoid or postpone train travel that week.

Belgium’s train operator announced some peak hour trains would be cancelled for Monday and Tuesday due to the heat, while the IRM meteorological institute in Belgium forecast record temperatures in the coming week.

The conditions in France followed a weekend in which the mercury hit 40°C, prompting an alcohol ban at the annual Fête de la Musique, a national festival that sees large crowds celebrate on the streets of most cities.

The ban applied to all events organised by the French state and its agencies, and aimed “to preserve emergency and healthcare services and allow medical staff to focus on caring for the most vulnerable,” the government said.

Water Danger Added to Heat Danger

The French government urged people not to try to cool off in unsupervised areas such as lakes and rivers, after 13 drowning deaths at the weekend.

Five people died in fatal swimming accidents over the weekend in Germany, where temperatures had already reached as high as 38°C.

Firefighters battled a wildfire near Akraifnio, in central Greece, that forced the temporary closure of a major motorway following hot, dry weather and strong winds.

Similar red warnings were issued by the authorities in Germany, Italy, Switzerland and Luxembourg.

Italy issued red alerts for 12 cities, including Milan, Turin, Venice, Bologna, Florence and Rome after several days of temperatures above 35°C.

A red alert was issued for the Basque country, with highs in San Sebastian forecast to rise to 40°C, almost double its average for this time of year.

The UK’s Met Office issued a rare red heat warning for Wednesday and Thursday for parts of England and Wales, amid forecasts suggesting temperatures could reach 38°C in some areas.

While the hottest temperatures were expected on the western coast, highs were expected to hang around 36°C to 40°C across much of the rest of France, Météo-France said.

The forecaster warned that the heatwave will be “widespread, long-lasting and intense,” with temperatures not expected to drop until the end of the week.

Prepare Your Home Before High Temperatures

Extreme heat is easier to manage when you plan ahead, UNEP advised.

Check weather forecasts and heat alerts so you know when dangerous conditions are expected.

Make sure fans, refrigerators and other cooling equipment are working properly.

Stock up on drinking water and essential medicines, and identify cool places you can go if your home becomes too hot.

Keep the Sun Out, Then Flush Heat at Night

Close curtains, blinds and shutters on sun-facing windows during the day.

External shading such as awnings, bamboo screens or vegetation works even better by blocking solar heat before it reaches the glass, UNEP reported.

Once outdoor temperatures drop at night, open windows on opposite sides of your home to flush out stored heat.

Shut everything again before morning to keep cooler air inside.

Stay Cool With Less Energy Where Possible

Air conditioners can save lives during extreme heat but widespread reliance on inefficient cooling can increase energy demand and contribute to climate change, UNEP reported.

Where possible, combine efficient cooling with passive measures that keep buildings naturally cooler.

Fans use far less energy than air conditioners and help people feel cooler by increasing airflow across the skin.

In parts of South Asia, dampened khus screens have long been placed over windows so that incoming air is cooled naturally as water evaporates.

Shade, cross-ventilation, shutters, cool roofs and well-designed buildings can also keep heat out, reducing the need for air conditioning.

Drink Water and Adjust Food and Clothing

Sip water throughout the day, even before thirst kicks in, because in extreme heat you dehydrate faster than you realize.

Avoid alcohol.

Swap heavy cooked meals for cold, smaller ones like salads, because cooking indoors raises the temperature of your home, and digesting large meals generates body heat.

Wear lightweight, light-coloured, loose-fitting clothes with a wide-brim hat and sunglasses.

When possible, stay indoors or in the shade during peak heat hours and schedule exercise and outdoor tasks for cooler parts of the day.

For outdoor workers, regular rest breaks, access to shade, frequent hydration and adjusted working hours are critical protections against heat-related illness.

Know Heat Exhaustion and Heat Stroke Signs

Dizziness, headache, nausea, muscle cramps and heavy sweating can signal heat exhaustion.

If you experience those, move to a cooler place, rest and drink water immediately.

Confusion, loss of consciousness, rapid breathing, seizures or a very high body temperature may indicate heat stroke, a medical emergency.

Call emergency services immediately if those heat-stroke signs appear.

Cool Your Body Directly

A cool shower, a damp cloth on the neck and wrists, or feet soaked in cold water can help lower body temperature.

Place cool packs wrapped in a towel on pulse points such as the neck, armpits and groin, where blood vessels are close to the skin.

UNEP reported these simple techniques work quickly, require little or no equipment and can help prevent heat-related illness.

Find a Cool Refuge and Check on Others

Libraries, shopping centres, community centres, cinemas and shaded parks can all provide relief during periods of extreme heat.

Many cities run dedicated cooling centres during heat emergencies — check your local council or health authority for the nearest one.

Going out in the early morning or evening is generally safer than during the hottest hours of the day.

Trees, parks, green roofs and other vegetation help cool neighbourhoods by providing shade and releasing moisture into the air.

When possible, choose shaded walking routes, spend time in green spaces and support efforts to expand urban tree cover and nature-based cooling solutions.

A call or visit during a heatwave can be life-saving for older adults, young children, pregnant women, people with chronic illness, those living alone and outdoor workers.

Sources referenced