heat

Cities’ adaptation to climate change is not progressing fast enough to protect their inhabitants from increasing heatwaves, infectious diseases and exposure to pollen, which are having an ever-greater impact on the urban population. This is the main conclusion of a study published in The Lancet Public Health, based on 28 indicators from more than 850 European cities, including many in Spain such as Madrid, Barcelona and Valencia. The greatest improvements were observed in cities that increased their green space. The study also suggests that risks are rising more rapidly in southern and eastern Europe.

Summer holidays in Spanish schools are amongst the longest in Europe, and every year the debate resurfaces as to whether their length is appropriate or excessive. Do they affect the knowledge and skills acquired? Could they have an impact on well-being? Do they affect all children equally? How could the summer months be improved for children and teenagers?

So far this year, up to 20 August, 262,000 hectares have been burnt in Spain, compared with the average of 105,600 hectares burnt between 2015 and 2024. Large-scale wildfires, exacerbated by climate change, are increasing both in frequency and in the area affected. But what happens in the forests after a fire? Can the woodland regenerate on its own? What criteria should be followed? We analyse, with the help of experts, how these ecosystems recover and what measures are taken to protect and restore them.

A study published in Science Advances has shown that areas affected by extreme wildfires – characterised by rapid spread and great difficulty in extinguishing them – have lower tree cover and reduced resilience compared to less intense fires, which may lead to long-term changes in vegetation. The team analysed 32.1 million hectares of coniferous forest in Canada and the western United States that were affected by fires between 2012 and 2023. Of this area, more than a third was burnt by extreme fires. In these cases, they observed that the faster the fire front advances, the greater the size and severity of the fire and the greater the distance from seed sources for the surviving trees, paving the way for long-term changes in vegetation.

Extreme heat is intensifying due to climate change – heat whose hourly fluctuations are not captured by traditional daily temperature indicators. Research published in Nature Climate Change has analysed global hourly data from 1981 to 2023, alongside climate projections through to the end of the 21st century. More than 80 per cent of the world’s land surface showed an increase in heat. Under a high-emissions scenario, the authors predict that, for the period 2070–2099, each hot day could include more than four hours of additional high temperatures compared with current levels (2001–2023). They also predict that non-hot days could see a further three hours of high temperatures, which would likely go undetected by daily measurements. Low- and middle-income countries are the hardest hit, bearing more than three-quarters of current and future heat exposure.

Western Europe experienced its hottest June–July on record, according to data from the Copernicus Climate Change Service (C3S). July saw the third and fourth heatwaves since May, marking an exceptional spell of extreme heat this summer. Across much of the region, the drought observed in May and June also persisted and intensified, with exceptionally low rainfall and soil moisture in France, Spain, parts of Germany and the United Kingdom. These hot and dry conditions in Western Europe led to the spread and intensification of last month’s extreme wildfires in countries such as Spain and France, according to the report.

In some areas of Spain and France, the intensity of weather conditions that favour wildfires — heat, drought and wind — increased by up to 50 per cent between 2016 and 2025, compared with the period between 1981 and 2010. This is one of the conclusions of a study carried out by a team including Spanish researchers, which analysed national records of forest fires in southern Europe – Spain, Portugal, France, Italy and Greece – alongside meteorological and climatic data from 1981 to 2025. The data, published in Scientific Reports, show that the number of days with conditions conducive to fires also increased in some areas of these countries. However, the annual number of fires over the last decade was 40 per cent lower than in the 1981–2010 period in all countries – a decline which, according to the authors, is consistent with a reduction in fires caused by humans, driven by stricter regulations.

Early this morning, the Minister of Interior, Fernando Grande-Marlaska, declared a state of emergency of national interest in the Community of Madrid and the province of Ávila due to the forest fires in Villa del Prado, San Martín de Valdeiglesias and Burgohondo. According to Carlos Novillo, the Regional Minister for the Environment, Agriculture and the Interior of the Community of Madrid, the fires were beyond the capacity of the fire services to extinguish and posed a serious threat to the population. The Madrid 112 Security and Emergency Agency has reported that, although the night-time firefighting efforts have been effective, the fires have still not been contained or brought under control. More than 10,000 people remain evacuated.

Data from the Copernicus European Forest Fire Information System (EFFIS) show that, as of 22 July, 119,458 hectares have been burnt in Spain. The average number of hectares burnt from 2006 to 2025 up to this date stands at 35,736 hectares. The fire in the Sierra Norte de Guadalajara, which has scorched more than 30,000 hectares and is still active, together with numerous fire fronts in other provinces and the fire in Los Gallardos (Almería), in which 13 people died, have caused the total area burnt to soar.

Various studies show that extreme heat is already influencing the decisions of international tourists, who are cutting short their summer holidays in the Mediterranean and opting for coolcations in search of destinations with milder climates. Climate adaptation is becoming a priority and, in the face of increasingly intense heatwaves, may boost the appeal of spring and early autumn.