New Zealand Water Temps

Aloha everyone,
Ill be on the North Island of New Zealand in February. I have surfed NZ in March and it was a little chilly (wind chill) I'm not sure whether to get a 3/2 steamer or a short sleeve full suit. Ill be staying at Piha, Raglan and Mangawhai.
Thanks
Ill be on the North Island of New Zealand in February. I have surfed NZ in March and it was a little chilly (wind chill) I'm not sure whether to get a 3/2 steamer or a short sleeve full suit. Ill be staying at Piha, Raglan and Mangawhai.
Thanks