Europe’s devastating heatwaves and wildfires in 4 charts

Western Europe experienced its warmest June–July period on record in 2026, according to the EU’s Copernicus Climate Change Service. Temperature records continue to be smashed, with no end to the heatwaves currently in sight.

While the climate crisis is behind this extreme shift in the region’s summer weather, in more specific terms, changes to the jet stream, El Niño and a hotter-than-usual ocean have combined to lock hot, dry air over much of the continent for the fourth time since May.

To get a sense of how unprecedented – and alarming – the situation is, the following charts highlight some of the key data behind Europe’s heatwave crisis.

These are just some of the records broken across the continent so far this summer:

With so many heat records broken, Reuters Climate Monitor shows which countries are experiencing the largest temperature anomalies compared with historical norms.

Comparing current temperatures in 10 European countries to historic norms, Belgium recorded the largest anomaly at the time of writing – its 4 August average high of 32.1°C was more than 11°C above its typical high for the 1961–1990 reference period.

While the UK is far from the hottest of these 10 countries, it recorded a temperature anomaly of 4.4°C on 4 August; the Netherlands, meanwhile, experienced a 9.8°C increase.

Only Portugal recorded a negative anomaly, with its average high 0.4°C below the historical reference.

Extreme heat is not only a health and environmental risk – it is increasingly taking a toll on workers and the wider economy. The International Labour Organization estimates that more than 2.4 billion workers globally are exposed to excessive heat, with around 22.85 million occupational injuries attributable to it each year. By 2030, heat stress is projected to reduce total working hours worldwide by 2.2%, equivalent to 80 million full-time jobs and $2.4 trillion in economic losses.

Those costs are already becoming visible in Europe. In the UK alone, research into the weeklong late-June 2026 heatwave estimated that 24 million working hours were lost, resulting in a $1.55 billion hit to economic output. Workers in more heat-exposed and physically demanding sectors, including construction and agriculture, reported particularly large reductions in working hours.

In the Gironde region of France, 2,500 firefighters battled a wildfire that broke out on 22 July and burnt over 420 sq km of land in under four days. At its peak, the blaze was just nine miles from the city of Bordeaux, reports the BBC.

“Every summer reminds us that wildfire is no longer an exceptional event but an increasingly predictable consequence of a warming climate,” said Paola Deda of the United Nations’ forest division for Europe.

Europe’s most intense fires have even created pyrocumulonimbus clouds or ‘fire clouds‘ – fire-generated thunderstorms that can make fires harder to control. The following video explains further:

With wildfires becoming more frequent, severe, and costly globally, prevention remains chronically underfunded compared to response. Closing that gap requires business, finance, government and civil society to act together. The Forum’s Global Wildfire Leadership Network brings leaders into a single community – housed within the Forest Future Alliance – to catalyze collective investment in wildfire resilience, align public and private efforts, and connect local initiatives to a global agenda.

Alongside this, the Forum’s Workforce Resilience to Extreme Heat workstream supports businesses in addressing the growing risks that rising temperatures pose to workforce health, safety and productivity, strengthening resilience as extreme heat becomes an increasingly significant risk to people and economies.