The regional government on Saturday declared a state of emergency and crisis for six months due to the wildfires that have been sweeping across the island since the end of July.
Meanwhile on the mainland, the bodies of a man and a woman were discovered at a farm in the Calabrian town of San Lorenzo on Friday after a fire engulfed a stable and another building.
The pair had been trying to save an olive grove from the flames, Italian news agency ANSA reported.
Many parts of southern Italy have been battling wildfires for days, with Calabria, Sicily, Sardinia and Puglia worst affected.
The number of large wildfires across the country is estimated to have tripled this summer compared to the yearly average, causing millions of euros of damage to the environment and economy.
Unusually high temperatures of more than 40°C are causing drought throughout the southern part of Italy, fuelling the fires.
Many of them are thought to have been started deliberately.
The Coldiretti agricultural association described the summer as the hottest in a decade.
In Sicily and Sardinia, temperatures could soar to 45°C on Tuesday and Wednesday.
“The temperatures that await us in the coming days require the utmost attention,” civil protection agency chief, Fabrizio Curcio, said on Sunday.
“It is crucial to avoid any behaviour that causes fires and to report fires in time, even if they are small.”
At the same time, the north of the country has been plagued by severe flooding and landslides in recent days, especially in Lombardy, where heavy rainfall caused Lake Como to burst its banks early on Thursday morning.
The northern part of South Tyrol reported downpours of 87 litres within a day.
“Flooding and intense rains in the north, fires in the south – the country has been split in two,” Curcio said.