Residents are trapped in 18 Victorian towns that have been cut off by surrounding flames, as bushfires continue to spread across the state.

There are fears the blazes burning across Victoria's far east and northeast could join into a "mega fire", and efforts to track the fire's movements have been hampered by thick smoke.

Seven people were still missing on Sunday afternoon in the East Gippsland bushfires that have killed two men, while military helicopters were flying evacuees still trapped in Mallacoota to safety.

Emergency crews were spread between those fires and further blazes still threatening lives in the Alpine Region.

They will be offered opportunities to be flown to safety and authorities are confident that as smoke clears they will be able to reach more communities.

While the Bureau of Meteorology has forecast cooling conditions in coming days, Emergency Management Commissioner Andrew Crisp stressed the threat was not over.

As of 2pm, 48 fires were listed as going, with more than 900,000 hectares scorched, including 700,000ha across East Gippsland and 200,000ha in the northeast.

"The challenges are not over," Mr Crisp said.

"It is still dynamic. It is still dangerous.

"What we are seeing with our weather, is yes, it is milder, it's more moderate, there has actually been some rain. But in terms of people thinking that this rain is going to put the fires out, that's not the case."

As of 2.40pm, an evacuation order was still in current for Freeburgh, Harrietville, Smoko, Wandiligong and surrounding areas.

There were two emergency warnings still in place in East Gippsland near the NSW border, and for areas near the Mt Buffalo National Park.

At least 18 Victorian towns cut off from outside, as deadly bushfires rage_1
Inset: Chinook helicopters are seen in transit to the Bairnsdale airport on Saturday. Photo: AAP

The Bureau of Meteorology said steady rain over the next two days could help fire crews gain more control over the massive blazes.

Light mist fell on Sunday at some centres including Bairnsdale, on the western edge of the East Gippsland fire ground.

"The conditions are much cooler, moisture's a lot higher than we've seen over previous days and the winds are also easing off a fair bit, especially through Gippsland today," senior forecaster Keris Arndt told AAP on Sunday.

"Hopefully that gives the fire agencies a bit of a chance to have a go at the fires and try to get a bit more control in there."

Rain is due to extend across the state, with light falls of up to 15mm forecast through Gippsland and the northeast ranges during the day.

Meanwhile Cann River and Mallacoota in the far east, are only forecast to receive a few millimetres of rain.

Only light falls are expected in the northeast.

Monday is likely to bring similar light steady rain in the same places, with forecasts of up to 15mm through Gippsland and the ranges.

"There's not a huge amount of wind and still pretty mild conditions continuing all the way through to mid week," Mr Arndt said.

A state of emergency remains in place for Victoria throughout next week and Premier Daniel Andrews has urged people to heed warnings and not be complacent.

The fires have already killed Buchan man Mick Roberts and Maramingo Creek man Fred Becker.