Worthing has a large tidal range and is best approached on the 2 hours either side of high tide. Expect good seabreezes at Worthing, which are accelerated by the south downs in the summer. In the winter, the south westerlies produce typical south coast conditions. For local view and analysis of the weather forecasts, Gavin Baylis weather blog and weather station is by far the best resource available to you. For Kitesurfing as an individual (rather than taking a private lesson) you are required to have insurance which can be obtained through the BKSA. You may be asked by fellow kiters if you have insurance. This is not just for your safety but the safety of other beach users and fellow kiters.