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Brief Forecast for all New Zealand
Valid to Midnight Sunday, 20-Apr
Cyclone Tam is expected to bring more severe weather to parts of New Zealand.
Northland to Taranaki, including Coromandel Peninsula, Bay of Plenty, northern Gisborne and the central high country.
Showers, heavy at times. Possible thunderstorms with localised downpours.
The remainder of the North Island
Early rain for Wellington, otherwise partly cloudy with one or two showers.
Marlborough, Nelson, Buller and Grey
Periods of rain, heavy at times.
Westland and Fiordland
Occasional rain, possibly heavy, clearing this afternoon or evening.
Canterbury
Scattered rain spreading north this morning, possibly heavy this afternoon and evening.
Otago and Southland
Periods of rain, easing to isolated showers from the south this morning.
Chatham Islands
Periods of rain.
Outlook for following three days
Monday
North Island: Showers for most, possibly heavy, but some longer fine spells about Gisborne and Hawke's Bay.
South Island: Periods of rain in the north and east, possibly heavy. Isolated showers in the south. Mainly fine for Westland and Fiordland.
Tuesday
North Island: Often cloudy with showers in the east and south. Fine spells and a few showers elsewhere.
South Island: Rain in the north and east clearing. Showers in the south. Mainly fine for Westland.
Wednesday
North Island: Showers in the east and south, easing. Fine spells elsewhere, and a few showers about Northland and Auckland.
South Island: Showers clearing in the east and south. Mainly fine elsewhere, with a possible shower about Buller and Westland.
Chatham Islands
Periods of rain, possibly heavy, turning to showers on Wednesday as northerlies turn strong southwest.
Issued: 6:26am Sunday 20 Apr 2025