Firefighters are struggling to contain wildfires in south-west France as strong winds push flames towards the city of Bordeaux, with one official saying they "are far from having the fire under control."
More than 300,000 people in France and Spain have fled fires which have been raging for days, as winds and high temperatures hamper efforts to contain them.
In Spain, where a state of emergency has been declared, a change in weather conditions has helped firefighters outside Madrid.
Spanish PM Pedro Sánchez admitted there were "complex times ahead". Meanwhile, authorities in València confirmed the death of a man in a fire.
The man, believed to be in his 70s, was found dead in his car by firefighters as they extinguished a fire in the Salt de l'Aigua ravine in Manises, according to local media reports.
In France, a further 55,000 were ordered to evacuate late on Saturday, taking the total to around 250,000 people in the south-western regions of Gironde and Landes.
Firefighter Captain Nicolas Braz told AFP news agency that the fire had created "its own winds - complete with whirlwinds", adding it was "erratic and unmanageable".
It is set to be another "difficult night," he said.
France has mobilised its military to help with the response and extra reinforcements from the army have been sent to help firefighters by clearing brush and creating fire breaks.
President Emmanuel Macron said France would "rebuild" and his government would "be there for as long as is needed".
The wind blew smoke towards the city of Bordeaux on Saturday and people reported an acrid smell in the air.
One tourist who fled an approaching wildfire near Bordeaux with his family described the scale of the blaze as "frightening".
Spencer Randall told the BBC his family evacuated in the early hours of Saturday to an area 100 miles east, but they can "still smell the wildfires from here".
"It's quite strong winds fanning the flames, just terrifying," he said.
A British couple holidaying in Bordeaux said they noticed the flames get worse on Friday night, as the fire approached.
"At about seven o'clock you could smell smoke. We thought someone was having a barbecue," Maisie told BBC Newsbeat from their holiday rental.
Her partner, Caleb, said the ash has now covered the pool in the house and turned their feet black when walking outside.
The smoke "really hits your lungs right away", they added.
Nearby, in Saint-Aubin-de-Médoc, residents evacuating said the situation was "stressful", with one local describing it a "disaster".
The final leg of the Tour de France, due to take place Sunday, has been shortened from 133km (83 miles) to 89km (55 miles) so that security forces can be redeployed to areas affected by wildfires, organisers and police have said.
Macron is set to have an emergency meeting with ministers as 30 or so fires rage across the country - a situation which the government said is totally unprecedented.
In Spain, fires continued near Madrid.
"Today we are rather more pessimistic than we were yesterday," Interior Minister Fernando Grande-Marlaska told reporters. "The weather conditions have not helped at all."
Describing the situation as "complex", he said wind gusts were expected to push the fire south.
"The night is not going to be very positive or very friendly to us," he warned.
Since the wildfires broke out in Spain, nearly 60,000 people had already been evacuated from the Madrid and Ávila regions, while more than 28,000 remain confined to their homes, according to Spain's interior ministry.
Late on Saturday, at least eight municipalities near Toledo were also ordered to evacuate, though it was unclear how many people that involved.
Madrid's regional president Isabel Díaz Ayuso described the situation as the "worst fire in the history of the region".