Wellington's not the worst place you could go, but beware it is pretty gloomy over winter.
The good news is, if you are a hardcore kiter or windsurfer you will get heeeeeaps of days on the water (get a good wettie)
There is also some nice waves over Wairarapa ways.
Good pubs and cafes. I have friends living over Mana ways, not traditionally the flashest suburb, but they scored an epic house with amazing sea views, overlooking an amazing kite spot.
Enjoy!
Edit: This is the current weather situation