A front pushes in from the west over New Zealand today, potentially unstable conditions may result for western regions.

Northland, Auckland, Waikato & Bay Of Plenty
Showers push into Northland in the morning then elsewhere during the afternoon from the west, possibly heavy with thunder. Conditions ease about Northland from afternoon then elsewhere in the evening. North to northwesterly winds.
Highs: 16-19

Western North Island (including Central North Island)
Dry to start, some sun possible then showers move into Taranaki late morning then elsewhere during the afternoon. Showers may be heavy with thunderstorms (especially about Taranaki) then easing in the evening for areas away from the coast (i.e. further inland). North to northwesterly winds freshen.
Highs: 14-17

Eastern North Island
Mostly sunny, there may be some high cloud. A few showers spread from the west late afternoon / evening, mainly about Wairarapa. North to northwesterly winds.
Highs: 16-20

Wellington
A dry morning, may be some sun then showers push in during the afternoon from the west. May be the odd isolated heavy fall. North to northwesterly winds freshen as showers arrive.
Highs: 14-15

Marlborough & Nelson
Showers spread into Nelson and the Marlborough Sounds during the morning from the west then a few showers spread into coastal Marlborough for a time in the afternoon. North to northwesterly winds pick up around midday. Some sun possible in the morning before showers move in.
Highs: 15-17

Canterbury
Mostly sunny then cloud thickens from afternoon, rain moves into the high country from afternoon also and a few spots of evening rain may reach the coast. Light winds tend easterly.
Highs: 13-15

West Coast
Mostly cloudy, may be a light shower or drizzle patch then rain becomes persistent from afternoon. Northeasterly winds tend northerly by evening.
Highs: 13-14

Southland & Otago
Mostly sunny after any morning low cloud clears, expect some high cloud during the day then thickening from late afternoon. Light easterlies.
Highs: 14-15

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz