Tournament organisers were forced into calling off the opening day's action as torrential rain hit the coast to the north of Sydney.
The event's host and seven-times world champion Layne Beachley expected the fourth round of seven on this year's world tour to get under way on Thursday, when waves of two metres are anticipated.
"We're seeing torrential rain squalls and strong gusty winds," Beachley said.
"The swell is building which is promising because yesterday it was as flat as a lake. We've called the competition off for the day, but we've got a really good forecast for the next few days. It's looking really good for Thursday, Friday and Saturday."