On Wednesday we have a high pressure system over the South Island – while around it a southeasterly airflow sits over the North Island – though it’s not very strong.

So for the North Island, we have mostly sunny weather in the east – despite the southeasterly airflow – which means there may be some cloud towards evening, with the chance of a light shower or drizzle patch.
The west of the North Island, meanwhile, is mainly sunny, with south to southeasterly winds.

For the South Island we have mostly sunny weather about Nelson and Marlborough, with light winds in the morning then afternoon northerlies for Nelson and afternoon easterly winds for Marlborough.
Canterbury sees a fairly cloudy day, but there may be a few sunny areas in the afternoon near the coast, southerlies at first then afternoon east to northeast winds.

The West Coast is mainly sunny too, with light winds.
Southland and Otago is mainly sunny after any early cloud breaks away, southwesterly breezes die out in the afternoon.

– Aaron Wilkinson & Drew Chappell, WeatherWatch.co.nz