Northland, Auckland, Waikato, Coromandel, Bay of Plenty and Gisborne

Often cloudy, with showers. Isolated thunderstorms for Northland and northern Auckland this evening, with localised downpours possible.

Hawke's Bay and Wairarapa, also Waitomo to Wellington, including the central high country

Often cloudy, with isolated showers becoming widespread and possibly heavy during the afternoon and evening, mainly inland.

Marlborough, Nelson, Buller, Westland and Fiordland

Periods of rain, possibly heavy and thundery for northwest Nelson and Buller.

Canterbury, Otago and Southland.

Often cloudy. Scattered showers during the afternoon and evening, possibly heavy and thundery.

Chatham Islands

Long fine breaks today. Mostly cloudy tomorrow, with a late shower or two.

Colville

Monday : Northeast 10 knots. Sea slight. Easterly swell 2 metres, period 12 seconds. Fair visibility in showers. Tuesday : Northerly rising to 15 knots in the afternoon. Sea slight. Easterly swell 2 metres, period 11 seconds, easing. Fair visibility in showers.

Outlook following 3 days: Wednesday: Northwest 15 knots. Thursday: Northwest 15 knots, changing southwest 15 knots later. Friday: Southwest 15 knots, turning northwest 15 knots.

Kaipara

Monday : Northerly 15 knots. Sea slight. Southwest swell rising to 2 metres, period 20 seconds. North of Cape Reinga: Easterly swell 2 metres, period 12 seconds. Poor visibility in rain developing this afternoon. Tuesday : Northerly 15 knots. Sea slight. Southwest swell rising to 3 metres for a time, period 18 seconds. North of Cape Reinga: Easterly swell 2 metres, period 11 seconds, easing. Poor visibility in morning and evening showers.

Outlook following 3 days: Wednesday: Northwest 15 knots. Moderate southwest swell easing. Thursday: Becoming variable 10 knots early, then tending westerly 15 knots later. Southwest swell becoming moderate. Friday: Becoming variable 10 knots early, but northwest 15 knots developing late. Moderate southwest swell.

Auckland

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

Situation
A northerly flow persists over New Zealand between a slow moving high to the east and a trough in the Tasman Sea. The trough moves over the country later today and into Tuesday, while a deepening low approaching from the southwest spreads a front onto southern New Zealand late Tuesday. The front moves north across the rest of the country on Wednesday followed by a southwest flow, while the low sweeps to south of New Zealand. Another front approaches the far south late Thursday, then advances north to central New Zealand on Friday, as the associated low approaches the lower South Island.

Warning
Nil

Forecast
For Manukau Harbour: Monday: Northeast 15 knots, easing to northerly 10 knots this evening. Sea slight but choppy when wind opposes tide. Fair visibility in occasional showers. Southwest swell rising to 2.5 metres this evening. Tuesday: Northerly 10 knots, becoming northwest 10 knots in the afternoon. Sea slight but choppy when wind opposes tide. Poor visibility in showers, clearing for a time morning and early afternoon. Southwest swell 2.5 metres, easing to 2 metres. Wednesday: Northwest rising to 15 knots by evening. Isolated showers, mainly in the morning and evening. Southwest swell easing to 1.5 metres. Thursday: Changing southwest 15 knots early. A few showers, easing by evening. Southwest swell rising to 2.5 metres. Friday: Southwest 10 knots. Changing northwest 10 knots. Mainly fine. Southwest swell easing to 2 metres. For Waitemata Harbour: Monday: Northeast 15 knots, easing to northerly 10 knots this evening. Sea slight but choppy when wind opposes tide. Cloudy periods, the odd shower. Poor visibility in occasional showers developing this evening. Tuesday: Northerly 10 knots, rising to 15 knots in the afternoon, becoming northwest 10 knots in the evening. Sea slight but choppy when wind opposes tide. Poor visibility in showers, clearing for a time morning and early afternoon. Wednesday: Northwest 10 knots. Isolated showers, mainly in the morning and evening. Thursday: Northwest 10 knots, rising to westerly 15 knots later. A few showers, easing by evening. Friday: Southwest 10 knots changing northwest 10 knots . Mainly fine. For Hauraki Gulf: Monday: Northeast 15 knots, turning northerly 15 knots this evening. Sea slight but choppy when wind opposes tide. Cloudy periods, the odd shower. Poor visibility in occasional showers developing this evening. Northeast swell about a metre. Tuesday: Northerly 15 knots, easing to 10 knots for a time in the morning and early afternoon. Becoming northwest 10 knots in the evening. Sea slight but choppy when wind opposes tide. Poor visibility in showers, clearing for a time morning and early afternoon. Northeast swell half a metre to 1 metre. Wednesday: Northwest 15 knots, rising to 20 knots in the evening. Isolated showers, mainly in the morning and evening. Northeast swell easing to half a metre. Thursday: Northwest 15 knots changing westerly 15 knots later. A few showers, easing by evening. Northerly swell half a metre. Friday: Southwest 10 knots changing northwest 15 knots. Mainly fine. Northerly swell half a metre. For the area from Bream Head to Cape Colville: Monday: Northeast 15 knots, turning northerly 15 knots this evening. Sea slight. Cloudy periods, the odd shower. Poor visibility in occasional showers developing this evening. Easterly swell 1.5 metres, easing to 1 metre. Tuesday: Northerly 15 knots, easing to 10 knots for a time in the morning and early afternoon. Becoming northwest 10 knots in the evening. Sea slight. Poor visibility in showers, clearing for a time morning and early afternoon. Easterly swell 1 metre. Wednesday: Northwest 15 knots, rising to 20 knots in the evening. Isolated showers, mainly in the morning and evening. Easterly swell half a metre to 1 metre. Northerly swell half a metre developing. Thursday: Northwest 15 knots changing westerly 15 knots later. A few showers, easing by evening. Easterly swell half a metre dying out. Northerly swell half a metre to 1 metre. Friday: Southwest 10 knots changing northwest 15 knots. Mainly fine. Northerly swell half a metre to 1 metre.

Outlook