Forecasts valid to Midnight Sunday, 17-Jan

Plenty

Warning: NIL

Saturday : Variable 10 knots. Westerly 15 knots developing this evening. Sea slight. Southeast swell 1 metre offshore, period 10 seconds. Sunday : Westerly 15 knots, rising to northwest 30 knots late afternoon. Becoming westerly 20 knots west of White Island late evening. Sea becoming rough at times. Southeast swell 1 metre offshore, period 10 seconds. Northeast swell 1 metre developing, period 10 seconds. Fair visibility in showers developing in the evening.

Outlook following 3 days: Monday: Becoming westerly 15 knots everywhere in the morning. Rough sea in the east easing. Tuesday: Rising to northwest 25 knots in the morning. Sea becoming rough. Wednesday: Westerly 20 knots. Rough sea easing early.

Issued: 12:52pm Saturday 16 Jan 2021

Colville

Warning: NIL

Saturday : Variable 10 knots. Northwest 15 knots developing this afternoon. Sea slight. Southeast swell 1 metre, period 10 seconds. Sunday : Northwest 15 knots rising to 25 knots late afternoon, then easing to westerly 15 knots late evening. Sea becoming rough for a time. Southeast swell 1 metre, period 10 seconds. Northeast swell 1 metre developing, period 10 seconds. Poor visibility in showers developing in the evening.

Outlook following 3 days: Monday: Westerly 15 knots. Tuesday: Becoming northwest 25 knots in the evening. Sea becoming rough. Wednesday: Westerly 20 knots. Rough sea easing early.

Issued: 12:52pm Saturday 16 Jan 2021

Brett

Warning: NIL

Saturday : Variable 10 knots. Northwest 15 knots developing this afternoon. Sea slight. Southeast swell 1 metre, period 10 seconds. Sunday : Northwest 15 knots rising to 25 knots late afternoon, then easing to westerly 15 knots late evening. Sea becoming rough for a time. Southeast swell 1 metre, period 10 seconds. Northeast swell 1 metre developing, period 10 seconds. Fair visibility in showers developing in the evening.

Outlook following 3 days: Monday: Westerly 15 knots. Tuesday: Turning northwest and rising to 25 knots late. Sea becoming rough. Wednesday: Easing to westerly 15 knots early. Rough sea easing early.

Issued: 12:52pm Saturday 16 Jan 2021

Kaipara

Warning: NIL

Saturday : Variable 10 knots. Sea slight. Southwest swell 1 metre, period 12 seconds. North of Cape Reinga: Easterly swell 1 metre, period 10 seconds. Sunday : Northwest 10 knots rising to northerly 25 knots around midday. Becoming westerly 20 knots late afternoon. Sea becoming rough for a time. Southwest swell 1 metre, period 14 seconds. North of Cape Reinga: Easterly swell 1 metre, period 10 seconds. Poor visibility in showers and possible thunderstorms developing in the afternoon, easing evening.

Outlook following 3 days: Monday: Southwest 15 knots, becoming northwest 15 knots in the evening. Southwest swell becoming moderate. Tuesday: Northwest rising to 25 knots later. Sea becoming rough. Moderate southwest swell. Wednesday: Westerly 25 knots, easing to 15 knots late. Rough sea easing. Southwest swell becoming heavy.

Issued: 12:52pm Saturday 16 Jan 2021

Raglan

Warning: NIL

Saturday : Variable 10 knots. Sea slight. Southwest swell 1 metre, period 12 seconds. Sunday : Northwest 10 knots rising to northerly 25 knots around midday, Becoming westerly 20 knots in the afternoon. Sea becoming rough for a time. Southwest swell 1 metre, period 14 seconds. Northwest swell rising to 2 metres. Poor visibility in showers and possible thunderstorms developing early afternoon, easing evening.

Outlook following 3 days: Monday: Westerly 15 knots. Southwest swell becoming moderate. Tuesday: Turning northwest and rising to 25 knots early. Sea becoming rough. Moderate southwest swell. Wednesday: Westerly 25 knots, easing to 15 knots late. Rough sea easing. Southwest swell becoming heavy.

Issued: 12:52pm Saturday 16 Jan 2021

Stephens

Warning: NIL

Saturday : Southwest 15 knots but variable 10 knots east of Farewell Spit to Hawera. Becoming northwest 15 knots everywhere this afternoon. Sea slight. West of Farewell Spit to Hawera: Southwest swell 1 metre, period 12 seconds. Sunday : Northwest 15 knots rising to 30 knots in the morning. Sea becoming rough. West of Farewell Spit to Hawera: Southwest swell 1 metre, period 12 seconds. Northwest swell rising to 2 metres. Poor visibility in showers and possible thunderstorms developing in the morning, easing evening.

Outlook following 3 days: Monday: Westerly 25 knots. Sea rough. Westerly swell becoming moderate everywhere. Tuesday: Rising to northwest 35 knots later. Sea becoming very rough. Westerly swell becoming heavy in the west. Wednesday: Easing to westerly 25 knots. Very rough sea easing. Heavy southwest swell in the west.

Issued: 12:52pm Saturday 16 Jan 2021

Cook

Warning: GALE

Saturday : Northerly 15 knots, rising to 25 knots late evening. Sea becoming rough. Sunday : Northerly 25 knots rising to 40 knots around midday, then easing to 30 knots in the evening. Sea becoming very rough for a time. Poor visibility in showers and possibly thunderstorms from afternoon, easing evening.

Outlook following 3 days: Monday: Northwest easing to 20 knots early morning, rising to 30 knots late. Rough sea easing for a time. Tuesday: Northwest rising to 40 knots early, easing to 30 knots later. Sea becoming very rough for a time. Moderate northwest swell developing for a time north of Mana Island. Wednesday: Northerly 30 knots. Sea rough.

Issued: 12:52pm Saturday 16 Jan 2021

Castlepoint

Warning: GALE

Saturday : Northeast 15 knots. Becoming northerly 20 knots but 30 knots south of Cape Palliser this evening. Sea becoming rough in the south. Easterly swell 2 metres, period 10 seconds. Southwest swell 1 metre, period 14 seconds. Sunday : Northerly 20 knots but 30 knots south of Cape Palliser. Northerly rising to 40 knots south of Cape Palliser around midday. Becoming northwest 40 knots everywhere in the evening. Sea becoming very rough. Easterly swell 2 metres, period 10 seconds, easing. Southwest swell 1 metre, period 12 seconds, easing. Fair visibility in showers at times from afternoon.

Outlook following 3 days: Monday: Northwest easing to 20 knots in the morning, rising to 35 knots in the south in the evening. Very rough sea easing for a time. Tuesday: Northwest rising to 30 knots, but 40 knots in the south. Sea very rough in the south. Wednesday: Becoming northwest 35 knots everywhere early, easing to 25 knots in the north later. Very rough sea, easing in the north. Moderate southwest swell developing.

Issued: 12:52pm Saturday 16 Jan 2021

Portland

Warning: NIL

Saturday : Southerly 15 knots but variable 10 knots south of Poverty Bay, becoming variable 10 knots everywhere this afternoon. Northeast 15 knots but northwest 15 knots north of East Cape developing this evening. Sea slight. Southeast swell 2 metres, period 10 seconds easing. Southwest swell 1 metre, period 14 seconds. Sunday : Northeast 10 knots but northwest 15 knots north of East Cape. Becoming northeast 20 knots but northwest 30 knots in the north late afternoon. Turning northwest 20 knots in the south in the evening. Sea becoming rough in the north. Southeast swell 2 metres, period 10 seconds easing. Northeast swell 1 metre developing in the north, period 10 seconds. Fair visibility in showers at times from afternoon.

Outlook following 3 days: Monday: Becoming northwest 20 knots everywhere early morning. Rough sea in the north easing. Tuesday: Becoming northeast 20 knots in the south early, then northwest 25 knots everywhere later. Sea becoming rough. Wednesday: Easing to northwest 20 knots. Rough sea easing.

Issued: 12:52pm Saturday 16 Jan 2021

Abel

Warning: NIL

Saturday : Northerly 10 knots rising to northwest 20 knots this evening. Sea becoming moderate. Sunday : Northwest 20 knots, rising to northerly 30 knots late morning. Becoming northwest 20 knots but westerly 30 knots north of Separation Point in the evening. Sea becoming rough at times. Northerly swell 1 metre developing. Poor visibility in showers and possible thunderstorms developing in the morning, easing evening.

Outlook following 3 days: Monday: Northwest 15 knots but 25 knots in the north. Sea rough in the north. Tuesday: Rising to northwest 25 knots, but 35 knots in the north. Sea becoming very rough in the north. Northwest swell becoming moderate north of Separation Point for a time. Wednesday: Easing to westerly 15 knots but 25 knots in the north early. Very rough sea in the north easing.

Issued: 12:52pm Saturday 16 Jan 2021

Grey

Warning: GALE

Saturday : Northeast 15 knots but southwest 15 knots north of Cape Foulwind. Becoming northerly 15 knots everywhere this afternoon, rising to northeast 25 knots south of Abut Head in the evening. Sea becoming rough in the south. Southwest swell 1 metre, period 12 seconds. Sunday : Becoming northerly 30 knots everywhere before dawn, easing to northwest 20 knots late morning. Northwest rising to 35 knots in the afternoon, changing southwest 30 knots late evening. Sea becoming very rough for a time. Southwest swell rising to 2 metres, period 13 seconds. Northwest swell 3 metres developing. Poor visibility in rain developing before dawn, and thunderstorms developing in the morning.

Outlook following 3 days: Monday: Becoming westerly 20 knots in the morning. Rough sea easing. Westerly swell becoming heavy. Tuesday: Rising to northerly 30 knots early, changing westerly 35 knots later. Sea becoming very rough. Heavy westerly swell. Wednesday: Easing to southwest 25 knots early. Very rough sea easing. Heavy westerly swell.

Issued: 12:52pm Saturday 16 Jan 2021

Milford

Warning: GALE

Saturday : Northeast 20 knots, rising to 30 knots this afternoon, and to 45 knots this evening. Sea becoming high. Southwest swell 1 metre, period 13 seconds. Northwest swell 2 metres developing. Poor visibility in rain developing this evening. Sunday : Becoming northwest 30 knots before dawn, easing to 20 knots late morning. Northwest rising to 35 knots north of Bligh Sound for a time in the afternoon. Changing southwest 25 knots in the evening. High sea easing. Southwest swell rising to 3 metres, period 12 seconds. Northwest swell rising to 4 metres for a time. Poor visibility in rain, and thunderstorms developing in the morning.

Outlook following 3 days: Monday: Westerly 20 knots becoming northerly 25 knots in the evening. Rough sea easing for a time. Heavy westerly swell. Tuesday: Rising to northwest 40 knots early, changing southwest 30 knots later. Sea becoming very rough for a time. Heavy westerly swell. Wednesday: Southwest easing to 25 knots. Sea rough. Heavy southwest swell.

Issued: 12:52pm Saturday 16 Jan 2021

Puysegur

Warning: STORM

Saturday : Northerly 20 knots but 35 knots west of West Cape, rising to 50 knots in the west this evening. Sea becoming high in the west. Southwest swell 2 metres, period 14 seconds, easing. Northwest swell rising to 3 metres. Poor visibility in rain developing in the west late evening. Sunday : Northerly 25 knots, but 50 knots in the west. Changing northwest 35 knots everywhere in the morning, easing to westerly 25 knots in the afternoon. High sea in the west easing. Southwest swell rising to 3 metres, period 12 seconds. Northwest swell rising to 5 metres for a time. Poor visibility in rain, with possible thunderstorms developing early morning.

Outlook following 3 days: Monday: Rising to northwest 35 knots. Sea becoming very rough. Heavy northerly swell easing. Westerly swell becoming heavy. Tuesday: Changing southwest 50 knots late. Sea becoming high. Heavy southwest swell. Wednesday: Southwest easing to 30 knots. High sea easing. Heavy southwest swell.

Issued: 12:52pm Saturday 16 Jan 2021

Foveaux

Warning: NIL

Saturday : Variable 10 knots but northeast 15 knots offshore. Becoming northeast 15 knots everywhere this afternoon, rising to 25 knots east of line Slope Point to Shelter Point this evening. Sea becoming rough in the east. Southwest swell 1 metre, period 14 seconds. Northeast swell rising to 2 metres, period 10 seconds. Sunday : Northeast 15 knots but 25 knots east of line Slope Point to Shelter Point. Becoming northwest 15 knots everywhere in the morning. Changing southwest 15 knots in the afternoon, and rising to westerly 30 knots in the evening. Sea rough at times. Southwest swell rising to 2 metres, period 12 seconds. Northeast swell 2 metres, period 10 seconds. Poor visibility in showers from evening.

Outlook following 3 days: Monday: Northwest 25 knots easing to 15 knots in the afternoon. Rough sea easing. Moderate northeast swell easing. Southwest swell, becoming heavy in the south for a time. Tuesday: Becoming northeast 25 knots early, changing westerly 50 knots late. Sea becoming high. Southwest swell becoming heavy. Wednesday: Westerly easing to 35 knots. High sea easing. Heavy southwest swell.

Issued: 12:52pm Saturday 16 Jan 2021

Chalmers

Warning: GALE

Saturday : Northeast 15 knots, rising to 25 knots this evening. Sea becoming rough. Southwest swell 1 metre, period 14 seconds. Northeast swell rising to 2 metres, period 10 seconds. Sunday : Northeast 25 knots easing to northerly 15 knots in the morning and to variable 10 knots in the afternoon. Southwest 20 knots developing early evening, rising to 35 knots late evening. Sea becoming very rough. Southwest swell 1 metre, period 12 seconds, easing. Northeast swell 2 metres, period 10 seconds, easing. Poor visibility in showers and possible thunderstorms developing in the afternoon.

Outlook following 3 days: Monday: Easing to westerly 25 knots early morning and variable 10 knots in the afternoon. Very rough sea easing. Southwest swell becoming moderate. Tuesday: Northeast 25 knots developing early, changing northwest 30 knots later. Sea becoming rough. Moderate southwest swell. Moderate northeast swell developing for a time. Wednesday: Rising to westerly 40 knots for a time. Sea becoming very rough for a time. Southwest swell becoming heavy.

Issued: 12:52pm Saturday 16 Jan 2021

Rangitata

Warning: NIL

Saturday : Northeast 15 knots, rising to 25 knots offshore late afternoon, and elsewhere in the evening. Sea becoming rough. Southwest swell 1 metre, period 14 seconds. Northeast swell rising to 2 metres, period 10 seconds. Sunday : Northeast 25 knots, easing to northerly 15 knots inshore in the morning. Becoming northwest 15 knots everywhere in the afternoon, rising to 30 knots in the evening. Rough sea easing for a time. Southwest swell 1 metre, period 12 seconds, easing. Northeast swell 2 metres, period 10 seconds, easing. Fair visibility in showers developing in the morning.

Outlook following 3 days: Monday: Becoming southwest 15 knots early morning, then northerly 15 knots in the afternoon. Changing southerly 15 knots late. Rough sea easing. Tuesday: Northeast 25 knots developing early, becoming northwest 25 knots late. Sea becoming rough. Moderate northeast swell developing offshore. Wednesday: Becoming westerly 20 knots. Rough sea easing. Moderate northeast swell offshore easing. Moderate southwest swell developing.

Issued: 12:52pm Saturday 16 Jan 2021

Conway

Warning: GALE

Saturday : Northeast 15 knots, rising to 25 knots late afternoon. Sea becoming rough. Southwest swell 1 metre, period 14 seconds. Northeast swell rising to 2 metres, period 10 seconds. Sunday : Northerly 25 knots rising to 35 knots north of Kaikoura and offshore in the morning. Northeast 20 knots everywhere late afternoon, turning northwest 25 knots in the evening. Sea becoming very rough for a time. Southwest swell 1 metre, period 12 seconds, easing. Northeast swell 2 metres, period 10 seconds, easing. Fair visibility in showers developing in the morning, clearing towards evening.

Outlook following 3 days: Monday: Changing southwest 20 knots early morning, becoming northerly 20 knots late morning. Rough sea easing. Tuesday: Rising to northerly 30 knots early. Sea becoming rough. Moderate northeast swell developing offshore. Wednesday: Northwest 25 knots. Sea rough. Moderate northeast swell offshore easing. Moderate southwest swell developing offshore.

Issued: 12:52pm Saturday 16 Jan 2021

Chatham Islands

Warning: NIL

Saturday : Southeast 25 knots easing to 15 knots this evening. Rough sea easing. Easterly swell 2 metres, period 10 seconds. Southwest swell 1 metre, period 12 seconds. Sunday : Southeast 15 knots turning northeast 15 knots in the morning. Sea slight. Easterly swell 2 metres, period 10 seconds, easing. Southwest swell 1 metre, period 12 seconds. Poor visibility in drizzle developing in the morning.

Outlook following 3 days: Monday: Turning westerly 15 knots in the afternoon. Moderate northwest swell developing. Tuesday: Becoming northerly 15 knots early, rising to 25 knots later. Sea becoming rough. Moderate northwest swell. Wednesday: Easing to northwest 15 knots late. Rough sea easing. Moderate northwest swell.

Issued: 12:52pm Saturday 16 Jan 2021