Hi,
Our season here starts when the trades kick in. Normally mid - late Nov. A good season will last till end of July/beg Aug. Average wind 15-20 knots.
I live in St Lucia, just set up a kite school in the north of the island. My friend runs www.caribbeankitesurfaris.com doing charters down to the grenadines.
St Lucias an awesome place to visit with only a few kiters here at the moment compared to the other busy island.
Check out www.bethlygoe.me.uk