I don’t know of a more consistent spot on earth for wind and warm water during the NZ winter. If you are into sub 20 knots you are out of luck but if you like it windy…
At the windiest time of day add on at least 10 knots to windguru
http://windguru.com/int/
Anyway a couple of us are headed out in July, to take advantage of the lowest fares this time of year for years, and will try and blog our way through it if we still have the energy to lift our callused hands and have not contracted swine flu on the plane.