Europe hits the strongest deadly heatwave in history so early in the Summer: Spain +45°C, Italy +43°C, from France to Hungary +39°C around 8.-13. June 2025 not excluded (!!!)
Marek Kučera 
Extreme heatwaves in Europe in early Summer 2025 are confirming according to meteorological models several days in a row. Abnormal heatwaves are predicted to hit Europe especially around 8.-13. June 2025, with a more northward or southward trajectory. Spreading of this content should save lives.
A series of classic heatwaves in Europe, spreading from Western Sahara above Pyrenees and the Alps above the continent is starting in late May 2025 with historic temperatures up to +40,1°C in Seville, Spain, +39,9°C in Coruche and Alvega, Portugal and +37,0°C in Begaar, France.
In many places in Spain, Portugal and France are current temperatures the highest in month May ever, and it appears that soon will be even worse, and even more northward and eastward.
According to fresh GFS runs from 30. May 2025 12Z, abnormal heat hits already around 8.-13. June 2025 large parts of Europe, with a possible local records up to +45°C in Spain and Portugal, +43°C in Italy and +39°C from France to Hungary (in the hottest parts of continental Europe, where we count area from France to Ukraine).
In many regions of Europe it appears to be the strongest early-Summer heatwaves in history, especially in parts of Spain, Portugal, France, Italy, Switzerland, Austria, Slovakia, Hungary and Balkan, maybe too in southern Germany, Czechia, southern Poland or parts of Ukraine.
Heatwave of this intensity and in southern regions duration should be unexpectedly deadly, with many health issues and worsening health conditions for people with “summer diseases” (look https://mkweather.com/weather-effect-on-diseases-in-climate-zones/).
Elders near extreme heat don´t feel thirst and together with children will be among the most vulnerable.
Widespread drought and wildfires, such as strong UV index should worsen the situation mainly in the Mediterranean, but in the case of the lack of precipitation from storms from heat, in continental Europe, too.
Animals and plants will suffer extreme heat similar like people, drinking water and irrigation will be needed if not obligatory.
Heatwave should be alternated by extreme storms from the ocean between 10.-15. June 2025, with a risk of stornger than EF1 tornadoes, locally, in lowlands with sources of moisture (e.g. swamps, lakes, big rivers,…).
Here’s a summary of notable early heatwave records across Europe:
🇪🇸 Spain
Andújar: On June 17, 2022, temperatures soared to 44.2°C, marking the highest June temperature since 1950 and the annual high for Europe that year.
San Sebastián: Reached 43.5°C on June 18, 2022, setting a new all-time record for the city.
🇫🇷 France
Biarritz: Experienced a record-breaking 42.9°C on June 18, 2022, surpassing the previous August 2003 record by 2.3°C.
Saint-Jean-de-Minervois: Recorded 40°C on June 16, 2022, the earliest such high temperature in France.
🇩🇪 Germany
Cottbus: Set a new station record with 39.2°C on June 19, 2022, breaking a 140-year-old record.
🇨🇭 Switzerland
Beznau: Reached 36.9°C on June 19, 2022, establishing a new national temperature record for June.
🇵🇱 Poland
Słubice: Equaled the national June record with 38.3°C on June 19, 2022.
🇨🇿 Czech Republic
Husinec: Recorded 39°C on June 19, 2022, marking the hottest June day on record in the country.
How You Can Prepare for extreme heatwaves:
1. Stay informed: Follow local weather alerts and heatwave warnings.
2. Stay hydrated: Drink water regularly, even if you’re not thirsty.
3. Avoid midday exposure: Plan outdoor activities for early morning or late evening.
4. Keep homes cool: Use fans, close blinds, and ventilate during cooler hours.
5. Check on vulnerable people: Elderly neighbors, young children, and the ill may need extra help.
At the end, there are 7 big advice on how to overcome abnormal heatwaves:
1. Stay Hydrated Constantly → To prevent dehydration and help your body regulate temperature.
2. Stay Indoors During Peak Heat → To avoid direct exposure to the most dangerous heat.
3. Use Fans & Air Conditioning Wisely → To keep your living space cooler and more breathable.
4. Wear Light and Loose Clothing → To help your body release heat more effectively.
5. Cool Down Your Body Actively → To lower your core temperature when it rises.
6. Check on Vulnerable People → To protect those at higher risk of heat-related illness.
7. Know the Warning Signs of Heat Illness → To act early and prevent serious health complications.
Temperature anomaly for 2.-9. June 2025 /https://charts.ecmwf.int/products/extended-anomaly-2t?base_time=202505290000&projection=opencharts_europe&valid_time=202506090000/.
Temperature anomaly for 9.-16. June 2025 /https://charts.ecmwf.int/products/extended-anomaly-2t?base_time=202505290000&projection=opencharts_europe&valid_time=202506160000/.
+37,0°C IN FRANCE!
PORTUGAL +39,9°C
+40,1°C IN SEVILLE, SPAIN
TORNADO NEAR LARNACA, CYPRUS
