I went to Glover's Reef in February (years ago) and had awesome weather all week. It was a great place to learn how to bonefish. The snorkeling is amazing as well! I've fished Acklins in February and had a lot of wind on one trip and great weather one trip. In my opinion, there's not a lot of point in worrying about it; be flexible, have a good attitude, stock up on rum and beer and the rest will take care of itself.
Enjoy your trip wherever you go and take pictures for us!