A low over the North Island, centred over Northland on Saturday, will today drift east of Gisborne and back out to sea in the Pacific Ocean.

The low, which started in the Tasman Sea will today merge with another low east of the South Island – but will remain weak.

This will encourage a weak southerly across New Zealand bringing cooler weather into upper North Island, but conditions settle and ease later today as high pressure builds – there will even be some frosts overnight in sheltered southern areas, Queenstown is dropping to at least -2 tonight meaning Monday morning will also be cool to begin with.

North Island:
A few showers, mainly in the very north, the eastern/coastal fringes and about Wellington/southern Wairarapa. Cooler winds from the southerly quarter develop. Becoming sunnier and mainly dry in many other places.
Highs: 10 to 16

South Island:
Mostly calm but a light southerly quarter wind in some coastal areas. Showers along the east coast with a few light snow flurries above a few hundred metres (nothing much). Light winds tonight as high pressure builds will see a few frosty areas inland. Sunniest weather on the West Coast.
Highs: 7 to 14

– WeatherWatch.co.nz