17,000 Hectares Burned as Europe's Wildfire Season Starts Early Amid 40°C Heat

The early onset of Europe's wildfire season is a stark reminder that climate change is no longer a distant threat. As temperatures soar to 40°C and fires ravage protected areas, scientists warn that such extreme events will become the new normal unless deep emissions cuts are made.

A ferocious wave of wildfires, driven by a punishing heatwave, has scorched more than 17,000 hectares across France, Spain, and Portugal, with a rapidly spreading blaze near the Greek city of Thessaloniki adding to the continent's mounting crisis. The fires, which erupted in the first days of July 2026, are an ominous echo of the June heatwave that caused thousands of excess deaths and mark the earliest start to the summer fire season in memory. France's Interior Minister Laurent Nunez voiced alarm that the annual wildfire season had started a month early, a sentiment that encapsulates the accelerating rhythm of climate-driven disasters in Europe.

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A ferocious wave of wildfires, driven by a punishing heatwave, has scorched more than 17,000 hectares across France, Spain, and Portugal, with a rapidly spreading blaze near the Greek city of Thessaloniki adding to the continent's mounting crisis.

Temperatures soared to 40°C on Sunday, July 5, as firefighters in Spain struggled to contain a 2,200-hectare inferno near the Costa Brava that had already blackened parts of the protected Gavarres natural area and prompted an arrest on suspicion of arson. In France, nearly 600 firefighters were mobilized to battle a 1,000-hectare blaze on a mountainside near Trevillach, while 300 more fought another forest fire in the Drôme department. Portugal's emergency services reported that a 13,000-hectare wildfire that had spread 35 kilometres since Thursday was 80 percent under control. Meanwhile, the new fire near Thessaloniki forced evacuations as flames menaced factories and houses, underscoring the human toll.

The scale and timing of these fires are no coincidence. Southern Europe has become a global hotspot for climate change, with average temperatures rising faster than the global mean. Heatwaves that were once rare are now routine, and the fire season, historically confined to July and August, has stretched well into June and even late spring. Scientists have repeatedly linked such extreme events to human-caused warming: for every degree of global temperature rise, the atmosphere can hold about 7% more moisture, but this paradoxically intensifies drought by accelerating evaporation from soil and vegetation, creating tinderbox conditions. The 2026 fires follow a grim pattern established in 2022 and 2023, when mega-fires consumed nearly 1 million hectares in Europe, killing dozens and causing billions in economic losses.

The immediate consequences are multifaceted. Beyond the tragic loss of life and property, the blazes ravage biodiversity in protected areas like Gavarres, release massive carbon stores from forests, and degrade air quality across the continent, sending plumes of particulate matter that can harm respiratory health hundreds of kilometres away. Economically, repeated large fires strain public budgets: firefighting costs are soaring, insurance payouts are climbing, and the tourism industry, particularly on the Costa Brava, faces cancellations during peak season. Agriculture suffers direct burns and smoke taint, a particularly heavy blow in France's wine-producing regions. The Portuguese fire, which raced through 13,000 hectares of forest and scrub, also threatens long-term timber supplies and soil stability.