TEMPO.CO, Jakarta - Millions of people across Europe on Wednesday were set for more extreme heat, as yet another heat wave descends on the world's fastest-warming continent. Some 300 million people — more than half Europe's population — will see temperatures pass 30 C.The new heat wave comes after Western Europe saw its warmest ever June-July period, the EU's Copernicus Climate Change Service(C3S) said on Monday. The looming heatwave is the third blast of extreme heat that Germany has seen this summer. France, Spain, Italy also brace for more heatExtremely high temperatures of over 35 C are also forecast for France, Spain and Italy. Heat wave set to extend from Balkans to UKThe heat wave is also set to spread to parts of southeastern Europe, including in Greece, Albania and Croatia.