The extreme weather, caused by an influx of hot air from Africa, is also carrying loads of dust from the Sahara Desert across some parts of the continent.
Portugal has issued red health alerts for extreme heat for more than half the country, with thermometers reaching 46C on Saturday.
The country's highest ever recorded temperature was 47.4C in 2003.
Authorities sent mobile phone alerts warning people of an extreme risk of fires - seeking to prevent more deaths after 114 people were killed in two massive forest blazes last year.
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