The Police Westpac Rescue Helicopter found the bushwalker at his Windemere Hut Overland Track location after receiving the call at 4am.

The man was treated by a rescue paramedic at the scene for severe dehydration as a result of uncontrolled vomiting.

After treatment he was deemed well enough to return to his car to drive home and crews offered to fly him to its position at the Cradle Mountain car park.

Due to cloudy weather conditions, the chopper was instead forced to land at the Devonport Airport.

Crews then took the man to the Mersey hospital for an additional check-up.

The cost of the operation is believed to be $10,000.

"Some cases don't always need emergency assistance, but in remote and adverse conditions like this the man probably did the right thing," Tasmanian Ambulance Service regional supervisor Norrie Hayes said.

"It was a no-drama situation, which required minor medical attention.

"We are thankful his condition wasn't any worse ... this example just highlights the expense involved."

It is unknown whether the man was travelling on the Overland Track alone.

Returning to Hobart around noon, the same helicopter was called to Hope Beach, South Arm, where a 42-year-old male surfer suffered a large laceration to his leg while surfing.

A police rescue crewman and rescue paramedic were winched to the surfer to treat him before taking him to a waiting ambulance to further assess his condition.