I spent a week in Maui Hawaii and the weather was beautiful, but the windsurfing sucked! It was windy for only one day when I was their, but the conditions were horrible. 20-30 foot waves that were breaking 100 yards from the shoreline. The water was so bumpy from the high surf that it was so hard to get moving. The wind was very gusty from 15-25 MPH, but kicked in to more in the low 20 MPH range later on. I was on a 115L board with a 5.3 sail, which seemed to be pretty good for the conditions. People were breaking masts, and getting stuck in the high surf, kites were tumbling down waves and getting clobbered. The lifeguards were in seadoos rescuing people. Not the best experience for windsurfing this trip. I rented gear from Hi-Tech, they were really nice, and did warn me not to go past the huge breaking waves 100 yards out, and I listened. The gear I rented was about 3 years old, and slightly warn out.
I did a lot swimming, sightseeing, eating and laying on the beach. I enjoyed all of that a lot.