The weather would remain nice and sunny until Sunday when some showers were expected in most of the main centres.
"I would say the weather is going to be fine like this pretty much for the whole country," Marintchenko said.
Wellington would be a few degrees colder with temperatures expected between 14C and 15C tomorrow due to some strong northerly winds rising up to 17C by the weekend.
The only exception to the nicer weather was Westland and Fiordland where the showers and rain could arrive on Thursday.
Wednesday's Forecast:
Northland
Showers, clearing this evening. Mainly fine tomorrow.
Auckland to northern Taranaki, including Coromandel, Bay of Plenty and the central high country
Fine
Gisborne, Hawkes Bay and Wairarapa
Cloudy with isolated showers, clearing tomorrow morning and becoming fine.
Southern Taranaki to Wellington
Cloudy Periods
Nelson, Marlborough, Canterbury
Mainly fine, apart from the odd shower about the ranges of Nelson and Marlborough this afternoon
Otago and Southland
Isolated showers clearing this afternoon and becoming fine
Source: MetService