what island?

We were married at Turtle Bay in early February a few years back. I don't know if it was unusual for the time or not, but when we were there it wouldn't have been kiteable surf. 30 foot faces were rolling in at Waimea and Pipeline. It was large enough they would have held the Eddie Big Wave comp, if it weren't already superbowl sunday. Things were a bit calmer at Turtle Bay, but still quite heavy. We weren't kiting at the time, but I remember the wind being quite strong then.

Enjoy your trip.

If in the north shore you would have to drive down past Waimea, past Haleiwa, and go the Dillingham air field. Across from air field is a spot called Mokes. Thats were you will find north shore kiters.
Because we are a Island the side to onshore winds are in certain a areas.

Mokes has a real name Mokuleia. Here it is on google map www.google.com/maps?q=mokuleia&ie=UTF-8&hq&hnear=0x7c00f4471abaf34b:0xc3f00a5782ddb51f,Mokuleia,+HI&gl=us&ei=fTCxUq-EAsfpoASXvIE4&ved=0CJwBELYD

Mokes is position where side winds are prevalent. If you kite were the beach curves up north toward Waimea it will be offshore side which is ok but you have to be careful and a expert and not get in the way of surfers who can be surf Nazis. Trade winds blow from the East (95% of the time) so look at the weather map were the arrows are pointing. Side to slightly On winds are at Mokes, Kailua, and Kahala. Kailua is the most friendliest little surf. Kahala is kitesurfing spot but wait for high tide, can be dangerous but people are friendly too. Mokes is also a surf kiting spot, more in the country so keep valuables at home. Be humble at mokes and mention that you are on vacation and you won't be living here, because sum guys are possessive of the spot. You won't find mean Hawaiian's kiting mostly Hoales (white caucasians) because they can afford it. I am one of few part hawaiians that kite.
I hope that helps. Most people are friendly if you are friendly.

Use windguru gives one week forcast and is pretty accurate before you go, www.windguru.cz/208824 . You can take two kites and rent a board when you get here at Hawaiian Water Sports but you have to go to Kailua to get it.

Yes! it true they tried to stop kiting at one time but that was only for teaching business. The only thing the community could get was no teaching on weekends.
I like kiting on the east side. Its a big shore line from Kailua to Kahuku all kitable, but watch out for too much country seclusion the locals sometime can get ruff with the Haole Boy (White Man). Always kite with other kiters.