In France, firefighters have managed to stop the spread of the forest fires that have been raging in the south-west since Tuesday.
"The fire could not advance any further overnight thanks to the significant resources deployed," the local prefect tweeted.
This allowed an important motorway to be reopened before weekend traffic began.
Further south in the Landes department, residents in certain areas were able to return to their homes on Friday evening.
The fires have not yet been extinguished, warned the prefect of Gironde, Fabienne Buccio.
1000 emergency services are still on site, including reinforcements from other European countries such as Germany.
In the area of the huge forest fire near Bordeaux, storms and strong winds are expected on Sunday night.
The effects of the thunderstorm on the fires are difficult to predict, as the fire brigade and the weather service announced on Saturday.
It could happen that the rain does not contain the flames, but that the fires are even intensified by strong winds or lightning.
Large forest fires had already broken out in the southwest in July, in which 20,000 hectares of forest were destroyed and almost 40,000 people had to evacuate their homes at times.
In France, 60,000 hectares of land have already fallen victim to the flames this year, six times the average from 2006 to 2021. The heat wave has sparked fires across Europe.
Meanwhile, neighboring Portugal has managed to bring the forest fires in the Serra da Estrela Natural Park under control, as the civil defense said on Saturday.
Interior Minister José Luís Carneiro described the fire as an "environmental tragedy" on Friday. Portugal had its hottest July in almost a century, and forest fires have already devastated around 79,000 hectares of land there this year.