I have only been to Bandon Dunes once, in October of 2002 (only Bandon and Pacific were there). We had 3 days where there were literally no clouds in the sky, almost no wind, and temps around 75. I'll never forget that my caddie, a guy named Hoops, said there were only about 30 of those days all year, and we got 3 of them.
I don't know if we were lucky or unlucky...probably a little of both.