On the Adelaide forecast, what location are they using? Do they mean straight West of the airport. I havn't seen any 1.5m waves! :)
Thats the wind wave height at the peak of the seabreeze. there is basically no swell in the gulf at the moment. 1.5 wind wave will equal a knee hi sloppy onshore "wave" at metro beaches.
20-30knts will get you a "stormy" with gutless almost surfable waves on the metro beaches and if sw some good jumps on the seacliff reef.
18-23 north of brighton means head to semaphore for good wind and knee crunching short chop