Pretty much our winter months. Trade winds kick off around June from memory with best bets being around July/August.

Not the most reliable place for wind though, be prepared for alternative activaties.

we went last year - last week in july- no wind and the first week of august - great wind. we went with 2 under 5s- first week to a resort which the kids loved and 2nd week to nananu -i- ra which they also loved- no swimming pool or kids club but wild beaches and mangroves to explore- crabs to chase etc- it was the best family holiday we have had and we got the most time out on the water we have had since the kids came on the scene.

Thanks for the info. I'll add to the short list.