The second round will start at 6 a.m. (2000 GMT) on Saturday, organisers said, adding that almost 250mm of rain had hit the course during the week.
Local professional Elvis Smylie will resume with a one-stroke lead on six-under after shooting a 65 on Thursday.
Major winner and three-times champion Cameron Smith was two shots off the lead on four-under along with former world number one Jason Day.
(Reporting by Ian Ransom in Melbourne; Editing by Peter Rutherford)

epa11733931 Workers drain a bunker as play is suspended during the Australian PGA Championship golf tournament at Royal Queensland Golf Club in Brisbane, Australia, 22 November 2024. EPA-EFE/JONO SEARLE AUSTRALIA AND NEW ZEALAND OUT