Total fire ban for northwest Victoria

A total fire ban has been declared for Victoria's Mallee region on Sunday, with temperatures set to approach 40C.

Mildura is headed for a forecast top of 37C while Swan Hill will sweat through a high of 40C as the region also faces high winds before a predicted late shower or two.

"CFA advises people living in areas at risk of fire to activate their bush fire plan," a CFA statement said on Saturday.