Firefighters hope smoke will ease enough this morning for air crews to photograph the fire in the Murramarang National Park between Pretty Beach and Batemans Bay.
Ground crews are stationed at coastal villages in and near the park as they try to contain the Currowan bushfire.
The fire jumped the Princes Highway overnight near East Lynne and coastal villagers were told it was too late to leave.
Rural Fire Service spokesman Brad Collins said the East Lynne area "is our biggest concern today", east and west of the highway.
An air crew flew over the fire ground on the morning of Monday, December 2, but visibility was too poor.
Shortly after 10am, he said they hoped to send another crew up to assess the size of the fire and plan defence.
Five aircraft were assigned to the Currowan fire for water bombing and reconnaissance.
He warned north-westerly winds of between 60-90km/h were predicted for Monday, with a south-westerly change due at 7-8pm.
Mr Collins said ground crews from RFS, National Parks and Fire and Rescue NSW were involved and on Monday morning about 21 crews were rotating.
They included teams from the Illawarra, the Far South Coast, a Southern Border Team from the Albury area, Griffith and the Monaro.
Country Fire Authority crews were due to arrive from Victoria on Monday.
Fire and Rescue strike teams made up of five crews had come from Sydney on the weekend.
It was likely a staging post would be set up in Batemans Bay to complement posts at Termeil and Ulludulla.
However, the Termeil staging post could become unsafe today.
"That could come under review as the fire is getting bigger today," Mr Colliins said.
A fire on Wild Pig Road, on the eastern side of the Clyde River caused concern to residents in the East Lynne area on Sunday afternoon and evening and fire crews were stationed on Donovans Creek Road overnight.
Mr Collins said the conditions were mixed overnight.
"While the fire made that run and jumped the highway, bit it also died down in some places," he said.
He said extra crews would arrive on Monday and would be staged at Kioloa and Bawley Point so they could move to protect property quickly.
The Currowan fire has been burning since the afternoon of Tuesday, November 26. On the weekend residents near Currowan Creek, Shallow Crossing, Mongarolow and Nelligen had some relief, but weather are expected to change late in the week.
Mr Collins said residents of coastal villages such as Pebbly Beach needed to stay up to date and monitor conditions.