This morning Accuweather's Extended Forecast for Gloucester suggests that Wednesday the 10th and Thurday the 11th might be the pick of the days next week. That's pretty close to what it said a few days ago. The 12th appeared ok if you can put up with the possiblity that there maybe a shower in the afternoon. I admit I can not tell whether they are just using the BOM Mid-North Coast/Taree forecast data. As always ringing up the Visitors Centre at Gloucester will give you local eyes on the sky. I think whenever you go this month you have the risk of some unusable nights but the further inland you go the better the odds, as long as there are no national weather events moving into NSW (like the remnants of the cyclone in WA).
http://www.accuweather.com/en/au/glo...st/13014?day=6