I was wondering if anyone could give me some information about the surf at Waikiki, Kailua and the North Shore. I was wondering if there is a big change to the surf depending on the time of the year? I have only ever been to the Islands in Dec/Jan but will travelling in March and I don't know what to expect.I am not a strong swimmer, so gentle waves is what I am looking for. Any information would be greatly appreciated. Mahalo.