I have not been to Carabete but I have lived in Geraldton WA since 1991 and having been to many places on the planet there is nothing to beat WA. It is summer now and the winds will blow for the next four months or longer. Last summer was a good one and this one has started early.
The weather can get very hot around christmas time so November and early Dec are probably the best months. Then things get better in early Jan until the end of Feb. Last year we had 20 days of sailing in March which was good.
Yesterday it got up to 30knts but a small swell today slightly less wind but a swell approaching 3meters. look at: [www.geroport.wa.gov.au]