This system will also mean those in the South Island, especially, will need to rug up, with a forecast of frosty mornings - temperatures are expected to drop around to as low as 0C for Twizel and 2C for Christchurch by the end of the week.
Hayes said the weather will begin to turn on Thursday as a sub-tropical low starts to move down the North Island.
He said Northland, and possibly Auckland, could be hit with more rain and strong gales on Thursday - this weather will then potentially become widespread across the island on Friday.
“It’s a fairly big low, so it should bring rain to most areas of the country,” said Hayes.
He said so far the variables of the sub-tropical low are shifting and more about its impact on the country will be known later in the week.
