when are you going i am heading up to darwin early july.
nightcliff is a cool place to kite this time of year also Vesties beach (where the darwin sailing club is) if you are staying in the city there is doctors gully that works in the offshore winds. but my fav spot is out the front of cullen bay in a seabreeze behind the sand bar. i wouldnt go to lee point because there are way too many people sitting in the bushes wanting to steal your car and the clothes off your back if you sit still long enough.
darwin rocks!!!
Bare sand Island is the all time secret kiting spot but you need a boat to get to it.
good winds and warm water