The heatwave, the second of the summer, will affect almost all of Spain from Friday, the national weather office said.
Temperatures will be especially high on Monday, reaching 44C (111 Fahrenheit) in some regions, due to the arrival of hot winds blowing from Africa.
"Beginning on Saturday this heatwave will be felt in France, Germany, Italy, southern Sweden, Poland and other nations in central Europe," the spokesman said.
Photo: Cristina Quicler/AFP
The heatwave will last at least nine days in Spain, the spokesman said. She did not offer a prediction for how long it could last in other nations.
Spain's first heatwave of the summer, which began on Thursday, caused temperatures to soar to 44C in the countryside of the southern province of Córdoba.
A low pressure system which brought cooler winds from the Atlantic caused temperatures to drop on Tuesday.
The highest temperature recorded in the country on Wednesday was in the Ebro Valley in the northeast where temperatures reached 40C.
The last major hot spell in Europe in 2003 caused an estimated 70,000 deaths, mainly among elderly people.
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