Strong northwesterlies will pick up in the far south on Monday evening and the heaviest falls are expected in Fiordland and southern Westland on Tuesday and Wednesday.
The strongest winds are expected east of the Southern Alps and MetService may issue a warning for the heavy rain and strong wind as the front moves towards the country.
It will move over the North Island on Friday, but will weaken as it arrives.
MetService said most parts of the North Island will experience cloud and showers late Thursday and Friday.
On a good note, it looks like another fine weekend is in store.
MetService said a new ridge of high pressure looked set to build over the South Island on Friday, stretching over the North Island throughout the weekend.
This means calm and clear weather for many places next weekend.
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Forecast for the start of the week:
Whangarei: Cloudy periods and chance of a shower tomorrow and cloudy on Tuesday. Highs around 17C, lows around 9C.
Auckland: Cloudy periods with light winds tomorrow and Tuesday. Highs around 16C, lows around 9C.
Hamilton: Fine tomorrow and cloudy periods on Tuesday. Highs around 15C, lows around 7C.
Tauranga: Fine tomorrow and Tuesday with southwesterlies. Highs around 15C, lows around 6C.
Wellington: Cloudy periods tomorrow, fine day on Tuesday. Highs around 11C tomorrow and lows around 6C. 4C warmer on Tuesday.
Christchurch: Fine tomorrow and Tuesday, with morning frost tomorrow. High of 12C tomorrow and a warm 19C on Tuesday.
Dunedin: Fine day with developing in the evening tomorrow. Fine day on Tuesday. High of 13C tomorrow and 18C on Tuesday.
NZME sr mb