Low cloud in Wellington has caused flights to be cancelled and delayed this morning at both Auckland and Wellington airports.
MetService meteorologist Brian Mercer said the fog in Wellington should clear in the next couple of hours.
"We are expecting strong winds to blow that fog away."
Northerlies should come in by late evening but throughout the day it would remain cloudy overhead with periods of rain, Mercer said.
According to the Wellington Airport website low cloud was causing delays and cancellations.