Went there 2 years in a row in december/january. Wind almost everyday and crazy nightlife. Try out jungle parties during full moon, it`s sick !!
I was kiting with Isla Kitesurfing. Ask for Francois, nice guy. That`s the biggest center on the island. Habagat is cool as well and relax. Super crowded during Xmas and NY but you can then go to another island downwind and enjoy there. I was staying in Fridays resort on white beach, great place.