Cold, wet weekend forecast, snow expected in some southern areas

New Zealand is in for a cold, wet weekend as autumn moves into winter.

MetService has warned some parts of New Zealand will get showers as a result of a low pressure system, especially along the western parts of the country.

"Western parts of New Zealand will get the wettest weather, with Sunday looking particularly wet for the South Island," a spokesperson wrote on Facebook.

There may even be snow on the way for parts of the South Island, with the some parts already having received a dusting.

"The Crown Range road webcam showed the ranges capped with some light snow this morning," the spokesperson wrote

"[This is] something that the higher ground in the South Island will be seeing more of over the weekend and into next week."

Severe weather watches for heavy rain have now been put in place for the Buller and Nelson areas, as well as the Tararua ranges.

A MetService spokesperson has warned the western parts of central and northern New Zealand may be in for thunderstorms over Friday evening and Saturday, but the situation could change.

"The weather situation remains highly dynamic and changeable over the coming days with further fronts affecting the country from Sunday," the spokesperson wrote on Facebook.

Auckland is expected to be wet across the entire weekend, with a high of 18degC.