Forecasters have warned that Italy is set to bake under the fourth heatwave of the summer from Wednesday, stretching all the way to Ferragosto. READ ALSO: What does Italy’s red level heatwave warning mean? Only Campobasso in Molise was under its maximum red alert on Wednesday. READ ALSO: The heatwave vocabulary you need to follow an Italian weather forecastThis was the fourth heatwave to hit Italy since the end of May, he confirmed. From the end of this week, he said people in Italy could expect “nothing but the unchallenged rule of sun and record heat.”