A southwesterly airflow lies over New Zealand today, fairly settled for the most part however a front does push northwards over the South Island but it will quickly weaken as it does so.

Northland, Auckland, Waikato & Bay Of Plenty
Chance of a few morning fog patches, a mix of sun and cloud otherwise with southwesterly winds.
Highs: 17-20

Western North Island (including Central North Island)
Morning cloud, may be a light shower then breaking to sunny spells. Westerly winds.
Highs: 15-18

Eastern North Island
A mostly sunny day, some morning high cloud breaks away. Light winds may tend onshore in the afternoon about coastal Hawkes Bay / Gisborne.
Highs: 19-22

Wellington
Morning cloud then mostly sunny, breezy north to northwesterly winds.
High: 17

Marlborough & Nelson
Mostly sunny, some morning high cloud breaks away. Northwesterly winds for Marlborough, west to southwest winds in Nelson.
Highs: 19-22

Canterbury
Mostly sunny, morning high cloud breaks away. Northwesterly winds die away in the evening.
Highs: 19-22

West Coast
Heavy rain about Fiordland spreads northwards during Saturday with a southwest change, this rain will weaken however to only a brief period of moderate rain by the time this front reaches Greymouth mid afternoon. The odd shower before this front moves northwards with mostly cloudy skies.
Highs: 15-16

Southland & Otago
Early rain about Southland then easing to showers and sunny spells, brisk westerlies. Otago has morning high cloud break to sunny spells, risk of a shower or two otherwise mainly dry with breezy westerlies tending to the southwest in the afternoon.
Highs: 13-17

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz