Northland to Taumarunui, including Coromandel, Bay of Plenty and Taupo

Fine spells and isolated showers. Showers becoming widespread and heavy for a time from late morning until evening with hail, and squally thunderstorms possible.

Gisborne and Hawke's Bay

Fine at first. A few showers from afternoon, possibly heavy and thundery with hail.

Taranaki to Wellington, including Taihape and Wairarapa

Showers, mainly in the west, with hail and possible thunderstorms. Becoming fine in the evening.

Nelson and Marlborough

A few showers, possibly heavy, becoming isolated this afternoon.

Buller and Westland

Showers, possibly heavy and thundery in Buller before dawn, clearing and becoming fine this morning.

Canterbury, Otago and Southland

Cloudy periods with showers becoming isolated this morning.

Fiordland

Mainly fine, apart from isolated showers in the south.

Chatham Islands

Rain clearing this morning and becoming fine.

Colville

Wednesday : Westerly 20 knots. Rising to northwest 30 knots late morning, then changing southwest 25 knots in the evening. Sea becoming rough. Southeast swell 1 metre easing. Northerly swell rising to 2 metres offshore. Poor visibility in thundery showers developing morning, clearing in the evening.

Outlook following 3 days: Thursday: Turning westerly 15 knots in the morning. Rough sea easing. Moderate northwest swell offshore, easing. Friday: Westerly 15 knots. Saturday: Southwest 15 knots.

Kaipara

*GALE WARNING IN FORCE* Wednesday : Westerly 20 knots. Rising to northwest 30 knots in the morning. Changing southwest 35 knots in the afternoon, then easing to 25 knots at night. Sea becoming very rough for a time. Very long period southwest swell rising to 5 metres for a time. Northwest swell 1 metre, easing. Poor visibility in showers, possibly thundery in the morning, clearing in the afternoon.

Outlook following 3 days: Thursday: Southwest easing to 15 knots. Rough sea easing. Heavy southwest swell easing. Friday: Southwest 15 knots, turning northwest 15 knots late. Sea becoming rough. Moderate southwest swell. Saturday: Changing southerly 15 knots early. Southwest swell becoming heavy.

Auckland

Manukau and Waitemata Harbours, Hauraki Gulf and Bream Head to Cape Colville.

Situation
A complex low moves across New Zealand today, followed by unsettled westerlies on Thursday. A front moves northwards over the South Island on Friday, then the North Island on Saturday, followed by a brief ridge of high pressure.

Warning
Strong wind advisory for Manukau Harbour, Hauraki Gulf, the area from Bream Head to Cape Colville and Waitemata Harbour

Forecast
For Manukau Harbour: Wednesday: Northwest 15 knots rising to 25 knots gusting 35 knots late morning. Changing southwest 25 knots gusting 40 knots late afternoon then easing to 20 knots in the evening. Sea becoming rough for a time between late morning and late afternoon. Cloudy with poor visibility in showers with possible thunderstorms developing morning, clearing evening. Southwest swell 3 metres, rising to 4.5 metres for a time. Thursday: Southwest 15 knots, turning westerly 10 knots at night. Cloudy periods, the odd shower. Southwest swell 3 metres easing to 1.5 metres. Friday: Southwest 15 knots, easing to westerly 10 knots in the afternoon. Cloudy periods, the odd shower. Southwest swell rising to 2 metres. Saturday: Changing southwest 15 knots in the morning, easing to 10 knots later. A few showers. Southwest swell rising to 3.5 metres. For Waitemata Harbour: Wednesday: Westerly 15 knots rising to northwest 20 knots early morning and to 25 knots gusting 40 knots late morning. Changing southwest 25 knots gusting 40 knots early evening then easing to 20 knots late evening. Sea becoming rough for a time between late morning and evening. Cloudy with poor visibility in showers with possible thunderstorms from late morning, clearing evening. Thursday: Southwest 15 knots, turning westerly 10 knots at night. Cloudy periods. Friday: Southwest 15 knots, easing to westerly 10 knots in the afternoon. Cloudy periods, the odd shower. Saturday: Changing southwest 15 knots in the morning, easing to 10 knots later. A few showers. For Hauraki Gulf: Wednesday: Westerly 15 knots rising to northwest 25 knots gusting 40 knots late morning, changing southwest 30 knots gusting 45 knots early evening then easing to 20 knots at night. Sea becoming rough for a time between late morning and evening. Cloudy with poor visibility in showers with possible thunderstorms from late morning, clearing evening. Northeast swell half a metre to 1 metre. Thursday: Southwest 15 knots, turning northwest 10 knots at night. Cloudy periods. Northeast swell half a metre or less. Friday: Changing southwest 15 knots early morning, turning westerly 10 knots late. Cloudy periods, the odd shower. Saturday: Changing southwest 15 knots in the morning. A few showers. For the area from Bream Head to Cape Colville: Wednesday: Westerly 15 knots but 20 knots about Colville Channel. Becoming northwest 25 knots gusting 40 knots but 30 knots gusting 45 knots across Colville Channel late morning. Changing southwest 30 knots gusting 45 knots everywhere early evening. Sea becoming rough from late morning. Cloudy with poor visibility in showers with possible thunderstorms from late morning, clearing evening. Northerly swell half to 1 metre. Easterly swell half a metre. Thursday: Southwest easing early morning to 15 knots, turning northwest 15 knots at night. Cloudy periods. Easterly swell half a metre or less. Northerly swell half a metre dying out. Friday: Changing southwest 15 knots early morning, turning northwest 15 knots late. Cloudy periods, the odd shower. Saturday: Changing southwest 15 knots in the morning. A few showers.

Outlook