A 21-year-old Australian tourist has fallen to his death from a hotel balcony in Phuket.

The Melbourne man, identified as Sebastian Eric Faulkner, fell in the early hours of New Year's Day, Phuket police sources told AAP on Wednesday.

The Phuket News reported that Mr Faulkner sought medical assistance from a hospital on December 30, but "left without anyone noticing".

He had been travelling with friends, who are assisting authorities with their inquiries.

Members of Mr Faulkner's family are expected to arrive in Phuket on Wednesday.