A north to northeasterly airflow lies over New Zealand today, a front curling into a low in the Tasman Sea pushes into the West Coast of the South Island then the western side of the North Island later on.

Northland, Auckland, Waikato & Bay Of Plenty
Mostly cloudy, a risk of morning fog about the Waikato then breaking away. Chance of a light shower otherwise mainly dry. Showers becoming a little more persistent about Northland in the afternoon then elsewhere overnight. Northeasterly winds.
Highs: 16-17

Western North Island (including Central North Island)
Sunny areas and some high cloud, northerly winds. Taranaki sees skies becoming mostly cloudy in the morning, chance of a shower from afternoon then rain develops in the evening, northeasterly winds freshen.
Highs: 15-17

Eastern North Island
Sunny areas and some high cloud, a chance of morning fog about Gisborne and perhaps Hawkes Bay. Light northeasterly winds.
Highs: 16-18

Wellington
High cloud, some sun at times. Rain develops later in the evening / overnight. Northerly winds.
High: 14

Marlborough & Nelson
Mostly cloudy skies for Nelson, the odd light shower develops in the morning then turning to rain in the evening. Marlborough has plenty of high cloud, spits of rain later in the evening then rain overnight. North to northwesterly winds for Marlborough, northeasterlies for Nelson.
Highs: 14-16

Canterbury
Plenty of high cloud, rain becomes persistent about the high country in the evening. A few spots of rain may reach the coast overnight. North to northeasterly winds.
Highs: 14-17

West Coast
Cloudy with rain, heavy at times south of Greymouth then becoming heavy further north in the evening. Northeasterly winds.
Highs: 13-15

Southland & Otago
Mostly cloudy, chance spit of rain in the evening otherwise mainly dry. Rain spreads from the west into the Central Lakes District (i.e. Queenstown etc) during the day then easing at night. North to northeasterly winds.
Highs: 12-13

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz