Depending on which way you are going the roads might still be closed from the recent rains.
I went to Inverloch yesterday (cough cough ssshhh

) and thought about heading down, but the back roads through Venus / Tarwin were closed.... so turned around and still had a quick blast at the inlet.
Other than that I saw someone on Seabreeze once mention there is an option to modify the Windguru results for local knowledge - click on options and you'll see what I mean. I think from memory it adds up to 30% when the wind is SW... Don't think it'll be epic or will hold for long given this weekends forecast