A low churns away west of New Zealand in the Tasman Sea today, an east to northeasterly airflow gradually increases over the country during the day.

Northland, Auckland, Waikato & Bay Of Plenty
A chance of morning fog about the Waikato. Increasing cloud otherwise, chance of a shower from midday. Rain spreads into Northland by evening then further south overnight. Northeasterly winds.
Highs: 16-18

Western North Island (including Central North Island)
Morning lower level cloud breaks to sunny areas and high cloud, there may be a shower or two about Taranaki from evening. North to northeasterly winds.
Highs: 15-17

Eastern North Island
Mostly sunny with some high cloud gradually increasing, light winds.
Highs: 16-19

Wellington
Cloudy areas with breezy northwesterly winds, easing in the evening / perhaps tending southerly.
High: 14

Marlborough & Nelson
Some high cloud, cloud thickens and lowers from afternoon as light winds gradually swing around to the east. The odd shower about Nelson from evening.
Highs: 14-16

Canterbury
Some early sun possible then cloud increases from late morning as light winds tend southerly. Drizzle develops during the afternoon, easterly winds by evening.
Highs: 10-13

West Coast
Mid level cloud breaks to sunny areas and some high cloud in the afternoon, Fiordland is mainly cloudy all day with patchy showers from afternoon. East to northeasterly winds.
Highs: 14-16

Southland & Otago
Cloudy with the odd shower or drizzle patch, early southerlies tending easterly by midday.
Highs: 9-10

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz