Low pressures lies over most of New Zealand today with a low centre moving over the North Island from west to east. A trough moves over the upper North Island overnight bringing some potentially unstable weather.

Northland, Auckland, Waikato & Bay Of Plenty
Showers then long dry spells and sunny areas developing around midday as breezy northwesterlies change westerly. Later in the evening some rain moves in again from the west bringing a chance of heavy falls and thunderstorms / hail, mainly Auckland northwards although a few showers may sneak further south overnight for a brief time.
Highs: 14-16

Western North Island (including Central North Island)
Rain with northerly quarter winds changing to the south during the morning, rain gradually eases to showers, clearing from Taranaki in the evening.
Highs: 10-13

Eastern North Island
Some rain south of about Napier with easterly quarter winds, rain may even be heavy about Wairarapa at times. Drier further north with northerly quarter winds. Winds change cooler southwest Napier southwards during the afternoon
Highs: 12-17

Wellington
Rain develops in the morning as southerly winds freshen, easing back to showers by evening.
High: 10

Marlborough & Nelson
Mostly cloudy about Marlborough with a few showers from late morning, cool south to southwesterly winds. Nelson sees morning cloud break to mostly sunny weather.
Highs: 10-13

Canterbury
A cold start then becoming mostly cloudy with a few showers developing towards midday, southwesterly winds freshen up in the evening.
Highs: 6-10

West Coast
Mostly sunny with some high cloud, mainly about North Westland. Southerly quarter winds.
Highs: 9-13

Southland & Otago
Showers about Southland with cool southwesterly winds developing in the morning. Otago may see some morning fog then sunny areas break through, light winds.
Highs: 8-12

By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz