Weather: Why Aucklanders should avoid travelling up north for long weekend

Aucklanders may need to avoid travelling up north for the long weekend as it is set for a significant downpour at the end of the week.

On Wednesday, MetService issued a heavy rain warning for Northland from Thursday 10:00pm until Friday at 10:00pm.

"Expect 100 - 130mm of rain, especially in the east and north with possible thunderstorms. Peak rain rates of 10-20 mm/h expected," MetService tweeted.

The weather forecaster also added the Westland region will also experience a brief amount of rain tomorrow before going back to being warm and dry.

On its website, MetService warned that the heavy rain could cause streams and rivers to rise rapidly.

"Surface flooding and slips are also possible and driving conditions may be hazardous," the forecaster said.

MetService added once the heavy rain has eased Northland should expect showers over the weekend.

A northerly wind will also flow throughout the country towards the end of the week, bringing humid air down towards New Zealand.

"The long-range trend is toward warmer and more humid conditions from late week as our air flows down from the sub-tropics," NIWA said on Facebook on Tuesday.

NIWA also added next month is set to be warmer than usual.

"Early signs point to February being warmer than average this year - hope you like it hot," the forecaster said on Facebook.

On Wednesday MetService said in a statement "a warm and muggy weekend is on the way for most of the nation."