On a Sunday morning in south-western France, the Gironde wildfire was still burning 25 kilometres from the centre of Bordeaux — a city of 268,000 people — and regional prefect Sophie Brocas was issuing an extraordinary warning to tourists: leave now, because nobody can predict where the flames will move next. That single admission of uncertainty captures something significant. Across France and Spain, authorities are no longer simply managing a fire season; they are confronting a scale of destruction that their systems were not designed to handle. The numbers are stark.

Roughly 375,000 people have been forced to abandon their homes across both countries — nearly 260,000 in France alone, including 36,000 evacuated from the Landes region south of Gironde. In Spain, where fires west of Madrid were gradually being brought under control, Prime Minister Pedro Sánchez warned of "difficult hours" and stated plainly that the Iberian peninsula was experiencing the direct consequences of a climate emergency. The Gironde blaze alone has consumed an area four times the size of Paris. What makes the current situation particularly alarming is how it combines several pressures at once.

Windy conditions on Saturday night disrupted firefighting efforts precisely when crews needed calm. Weather forecasters are now predicting a second heatwave arriving as early as Tuesday, with temperatures potentially reaching 40°C in parts of France. Interior Minister Laurent Nuñez described conditions as "very unfavourable," while Bordeaux's mayor, Thomas Cazenave, noted that the fire stood at "the gates of the metropolitan area." President Emmanuel Macron convened a crisis cabinet meeting on Monday morning.