The Westpac Rescue Helicopter was deployed to the Cradle Mountain area about 9am on Saturday to assist with the rescue of three injured walkers on the Overland Track, police say.

Poor weather conditions mean the helicopter cannot access the walkers at their shelter in Kitchen Hut.

Police say the helicopter will remain in the area until an expected break in the area.

In the meantime land-based Search and Rescue personnel have started to escort able-bodied hikers out of the area and back to Dove Lake, police say.

The renewed rescue efforts follow a previous attempt at a rescue on Friday.

Police were alerted to the trio of walkers after a distress signal was activated about 3.30pm on Friday, Inspector Shane LeFevre said.

He said a message advised the hikers were suffering from hypothermia at Kitchen Hut.

"The three people are believed to be international visitors from India aged 28, 37 and 45 years," Inspector LeFevre said.

"The Westpac Rescue Helicopter was activated and travelled to Cradle Mountain."

He said the helicopter had returned to Hobart that night due to severe weather.

"A land based Search and Rescue party involving three police Search and Rescue personnel and two Ambulance Tasmania Wilderness Paramedics commenced travel from Dove Lake," he said.

"At the time two Parks and Wildlife Rangers and other civilian walkers were with the three International walkers at Kitchen Hut and provided assistance until police and paramedics arrived at around 9pm."

Police said rescue efforts would continue throughout Saturday.