This is a little dated but still fun to think about windsurfing in December.  In the attached video is Alexis, my former windsurfing instructor at Kitty Hawk Water Sports in Nags Head.  A man was out there with her but I forgot his name.  It was blowing mostly west 18-20.  I think Alexis was on a 4.5 and a little overpowered. Air temp was in the 60’s.  Unfortunately, I had work to do and didn’t have time to get out there.  That’s the nature of the business.