Scorching temperatures have also devastated crops across northern Europe, with parts of France and northern Germany showing serious damage to wheat yields.
Met Office meteorologist Alex Burkill said the mercury was likely to reach the high 20s and low 30s again, adding that despite the more comfortable temperatures in recent days "it is not the end of the hot weather for the summer".
LISBON, Aug 4 (Reuters) - More than 740 firefighters battled a forest fire in southern Portugal on Saturday as temperatures climbed to near record highs in the Iberian Peninsula amid a Europe-wide heatwave that has brought drought and wildfires from Greece to Sweden.
Europe's Mediterranean coast has weather heatwave warnings in place after it is predicted that Spain and Portugal could experience temperatures of up to 48 degrees later this week.
Spain could beat its record of 47.3ºC set a year ago, and Portugal could go past its 47.4ºC record set in 2003.
Met Office forecaster Seven Keates said: 'The European temperature record could be broken, with highs in Portugal and Spain around 48C on Saturday, and Sunday will also be very hot.
Europe's heatwave gripped Spain and Portugal on Friday, as governments checked for forest fires, a Budapest game reserve fed its animals iced snacks and a Finnish supermarket invited customers to sleep over to stay cool.
"Oh it's bad", said tourist Paul Snell.
The hot, dry conditions have led to several wildfires in Portugal.
And over in Britain, an unusually long, torrid summer has taken its toll on the country's flowers. In Brazil, the highest temperature ever registered by the National Institute of Meteorology (Inmet) was 44.7 ° C, in the city of Bom Jesus (PI), on November 21, 2005.
People cool off in an urban beach at Madrid Rio park in Madrid, Friday, Aug. 3, 2018.
Two men died of heat-stroke in the southeastern region of Murcia, Cadena Ser radio station reported on Wednesday. Temperatures approached 30 C this week in Finland, where the August average is 19 C. EDF said the decision was made to avoid overheating the rivers. In Sweden July was a record month and wildfires burnt in parts of the country.
Portugal's Civil Protection Agency has been sending mobile text alerts warning of extreme fire risk in some areas, as they seek to avert casualties.