A weak ridge pushes in on Friday while a low becomes organised and deepens during the day just north / northeast of the North Island.

Plenty of high cloud for the upper North Island with areas of sun breaking through at times. Showers for Northland from midday. Overnight or more towards dawn on Saturday some heavy rain may start to clip eastern Northland and the Coromandel. Southerly winds, tending a little more southeast in the afternoon.

Risk of a morning shower for the lower western North Island, cloud breaks to some sun in the afternoon. Southeasterly winds freshen especially overnight about coastal Taranaki. Cloud about the Wairarapa with a risk of drizzle in the morning, spreading further northwards along the east coast during the afternoon as south to southeasterly winds freshen.

South to southeasterly winds freshen in the morning for Wellington bringing the risk of a shower, some sun later in the day.

Cloudy areas developing in the morning about Nelson and Marlborough with east to southeasterly winds, mainly dry although there may be a shower later in the day. Any morning showers clear Canterbury then sunny spells develop, southwesterly winds tend east to northeast in the afternoon.

A mix of sun and cloud along the West Coast with southwesterly winds. Mostly cloudy with a few showers about Southland, clearing at night. Otago has cloudy areas and occasional sun, may be a shower afternoon / evening. West to southwesterly winds, fresh about coastal areas. A cool start for inland areas.