Whanganui to Wellington will experience areas of cloud or fog which should clear this afternoon leaving the rest of the day fine.
In the Nelson, Marlborough, Buller, Canterbury and Otago patches the weather will be fine - apart from areas of low cloud or fog morning and night, and a few showers inland this afternoon.
And in Westland, Fiordland, Southland it will be mainly fine, apart from low cloud or fog morning and night and patchy drizzle in some places.
The fog is yet to lift in Auckland this morning.
Auckland Airport confirmed fog restrictions were still in place however no major flights had been disrupted.
While one regional flight had been delayed due to the fog main trunk flights to Wellington, Christchurch, Dunedin and Queenstown have not been affected.
International flights are not affected.
"Passengers should check Auckland Airport's website www.aucklandairport.co.nz for the latest flight arrival and departure information," said a spokesperson.
MetService is forecasting rain for the early part of the new week.
On Monday there will be areas of cloud in the morning, then it will be mainly fine for most.
There will also be more scattered showers about inland areas during the afternoon to early evening, particularly for the central North Island.
Areas of cloud will still hang about on Tuesday morning, then it will be mainly fine for most.
However there will be more scattered showers about inland areas during the afternoon to early evening, particularly for the central North Island.
Things may not improve by Wednesday with areas of cloud predicted in the morning then fine breaks.
The South Island will remain cloudy and there will be isolated showers about inland areas during the afternoon to early evening.