Coastal Weather

Issued at 22:48 on Sunday 14 December 2025.

Abel

Monday 15 December

Northwest 15 knots, rising to 25 knots in the afternoon. Sea becoming rough. Poor visibility in scattered rain developing in the evening.

Tuesday 16 December

Northerly 30 knots, becoming westerly 25 knots in the morning. Sea rough.

Wednesday 17 December

Westerly 20 knots, changing northeast 10 knots early.

Thursday 18 December

Easterly 10 knots, turning northerly 15 knots early.

Brett

Monday 15 December

Northeast 15 knots. Sea slight. Easterly swell 1 metre.

Tuesday 16 December

Northerly 15 knots, becoming southwest 15 knots in the evening.

Wednesday 17 December

Southwest 20 knots.

Thursday 18 December

Southwest 20 knots.

Castlepoint

Weather warning: Gale warning

Monday 15 December

Northerly 25 knots, rising to 35 knots south of Cape Palliser in the morning. Sea becoming very rough in the south. Southerly swell 1 metre. Northeast swell 1 metre developing.

Tuesday 16 December

Northerly 20 knots but 35 knots in the south, becoming westerly 20 knots in the evening. Very rough sea in the south, easing.

Wednesday 17 December

Westerly 20 knots, rising to southwest 30 knots early. Easing to southerly 20 knots later. Sea becoming rough for a time. Southwest swell becoming moderate.

Thursday 18 December

Southwest 20 knots, easing to westerly 10 knots later. Moderate southerly swell.

Chalmers

Weather warning: Gale warning

Monday 15 December

Northerly 15 knots, rising to northeast 25 knots in the morning, then rising to 35 knots for a time in the afternoon. Turning southerly 20 knots in the evening. Sea becoming very rough for a time. Southwest swell 1 metre. Northeast swell rising to 2 metres. Poor visibility in rain developing in the afternoon.

Tuesday 16 December

Southwest 15 knots, rising to 25 knots in the evening. Sea becoming rough. Moderate southwest swell developing.

Wednesday 17 December

Southwest 25 knots, easing to 15 knots later. Rough sea easing. Moderate southwest swell.

Thursday 18 December

Southwest 15 knots, turning northwest 10 knots later. Moderate southwest swell.

Chatham Islands

Monday 15 December

Northerly 15 knots. Sea slight. Southwest swell 1 metre easing.

Tuesday 16 December

Northerly 20 knots. Northwest swell becoming moderate.

Wednesday 17 December

Northerly 25 knots, easing to variable 10 knots later. Rough sea easing. Moderate northwest swell.

Thursday 18 December

Variable 10 knots. Moderate westerly swell.

Colville

Monday 15 December

Northeast 15 knots. Sea slight. Easterly swell 1 metre.

Tuesday 16 December

Northerly 20 knots.

Wednesday 17 December

Northwest 20 knots, turning southwest 20 knots early.

Thursday 18 December

Southerly 20 knots, easing to 10 knots early. Turning westerly 15 knots later.

Conway

Weather warning: Gale warning

Monday 15 December

Northerly 20 knots, rising to 30 knots north of Kaikoura Peninsula in the morning. Becoming northerly 25 knots but 35 knots offshore in the afternoon. Sea becoming very rough offshore. Southwest swell 1 metre. Northeast swell 1 metre.

Tuesday 16 December

Northerly 25 knots but 35 knots offshore. Becoming westerly 20 knots everywhere in the morning. Sea very rough offshore, easing. Moderate northeast swell easing.

Wednesday 17 December

Southwest 25 knots. Sea rough. Southwest swell becoming moderate.

Thursday 18 December

Southwest 20 knots, easing to 10 knots later. Moderate southerly swell easing.

Cook

Weather warning: Gale warning

Monday 15 December

Northwest 15 knots but northerly 25 knots south of Cape Terawhiti. Rising to northwest 35 knots everywhere in the morning. Sea becoming very rough everywhere.

Tuesday 16 December

Northwest 35 knots, easing to 25 knots in the evening. Very rough sea easing.

Wednesday 17 December

Northwest 25 knots, changing southerly 30 knots early, easing to 20 knots late. Sea rough at times. Southerly swell becoming moderate.

Thursday 18 December

Southerly 20 knots, changing northerly 10 knots early. Moderate southerly swell easing.

Foveaux

Weather warning: Gale warning

Monday 15 December

Northeast rising to 25 knots early morning. Then rising to northerly 35 knots late morning. Easing to northwest 20 knots in the afternoon. Sea becoming very rough for a time. Long period southwest swell rising to 2 ma. Very poor visibility in periods of heavy rain. Possible thunderstorms from evening.

Tuesday 16 December

Northwest 20 knots. Turning southwest 20 knots in the afternoon. Moderate southwest swell developing.

Wednesday 17 December

Southwest 20 knots. Moderate southwest swell.

Thursday 18 December

Westerly 20 knots. Moderate southwest swell.

Grey

Weather warning: Gale warning

Monday 15 December

Northerly 15 knots but northeast 25 knots south of Abut Head, rising to 30 knots but 40 knots in the south in the morning. Becoming northerly 35 knots but southwest 15 knots in the south in the evening. Sea becoming very rough for a time. Northwest swell 3 metres developing. Southwest swell rising to 2 metres. Very poor visibility in periods of heavy rain.

Tuesday 16 December

Northwest 15 knots but northerly 30 knots north of Cape Foulwind. Becoming westerly 20 knots everywhere in the morning. Rough sea in the north easing. Northwest swell becoming heavy.

Wednesday 17 December

Southwest 25 knots, easing to 15 knots late. Rough sea easing. Heavy westerly swell easing.

Thursday 18 December

Southwest 20 knots. Moderate southwest swell.

Kaipara

Monday 15 December

Northerly 20 knots. Sea moderate. Long period southwest swell 1 metre easing.

Tuesday 16 December

Northerly 15 knots, changing southwest 20 knots in the afternoon. Moderate southwest swell developing.

Wednesday 17 December

Southwest 20 knots. Southwest swell becoming heavy.

Thursday 18 December

Southwest 15 knots. Heavy southwest swell, becoming moderate southwest swell north of Cape Reinga.

Milford

Weather warning: Gale warning

Monday 15 December

Northeast 40 knots, easing to northerly 30 knots in the morning, then easing to northwest 15 knots in the afternoon. Very rough sea easing. Northwest swell rising to 4 metres for a time. Southwest swell rising to 3 metres. Very poor visibility in periods of heavy rain. Possible thunderstorms from evening.

Tuesday 16 December

Northwest 15 knots, turning southwest 20 knots in the morning. Northwest swell becoming heavy.

Wednesday 17 December

Southwest 25 knots. Sea rough. Heavy westerly swell easing.

Thursday 18 December

Southwest 25 knots. Sea rough. Moderate southwest swell.

Plenty

Monday 15 December

Easterly 15 knots, turning northerly 15 knots in the morning. Sea slight. Easterly swell 1 metre.

Tuesday 16 December

Northerly 15 knots, rising to northwest 25 knots in the morning. Sea becoming rough.

Wednesday 17 December

Northwest 25 knots, turning southwest 20 knots early. Rough sea easing.

Thursday 18 December

Southerly 15 knots, turning westerly 15 knots later.

Portland

Monday 15 December

Northeast 15 knots but northerly 25 knots south of Mahia Peninsula. Becoming northerly 25 knots everywhere in the afternoon. Sea becoming rough everywhere. Southerly swell 1 metre. Northeast swell 1 metre developing.

Tuesday 16 December

Northerly 25 knots. Sea rough.

Wednesday 17 December

Northwest 25 knots, turning southwest 20 knots early. Rough sea easing. Moderate southwest swell developing.

Thursday 18 December

Southerly 20 knots, easing to southwest 10 knots later. Moderate southerly swell.

Puysegur

Weather warning: Storm warning

Monday 15 December

Northeast 20 knots but northerly 40 knots west of West Cape, rising to northerly 40 knots but 65 knots in the west early morning. Becoming northwest 30 knots everywhere late morning. Sea becoming very high for a time in the west. Northwest swell rising to 4 metres for a time. Southwest swell rising to 4 metres offshore. Very poor visibility in periods of heavy rain. Possible thunderstorms from evening.

Tuesday 16 December

Northwest 25 knots, turning southwest 20 knots in the morning. Rough sea easing. Heavy westerly swell.

Wednesday 17 December

Southwest 20 knots. Heavy westerly swell easing.

Thursday 18 December

Westerly 20 knots. Moderate westerly swell.

Raglan

Monday 15 December

Northeast 10 knots, rising to northerly 20 knots in the morning. Sea becoming moderate. Long period southwest swell 1 metre easing.

Tuesday 16 December

Northerly 25 knots, becoming westerly 25 knots in the afternoon. Sea rough. Northwest swell becoming moderate.

Wednesday 17 December

Southwest 20 knots. Westerly swell becoming heavy.

Thursday 18 December

Southwest 15 knots. Heavy westerly swell easing.

Rangitata

Weather warning: Gale warning

Monday 15 December

Northerly 15 knots, rising to 25 knots in the morning, then rising to 35 knots for a time in the afternoon and early evening. Easing to southwest 10 knots south of Rakaia River. Sea becoming very rough for a time. Southwest swell 1 metre. Northeast swell rising to 2 metres. Poor visibility in rain developing in the evening.

Tuesday 16 December

Southwest 10 knots but 25 knots offshore. Easing to southerly 10 knots everywhere in the morning, rising to 20 knots in the afternoon. Rough sea offshore, easing.

Wednesday 17 December

Southwest 25 knots, easing to 15 knots late. Rough sea easing.

Thursday 18 December

Southwest 15 knots, easing to variable 10 knots later.

Stephens

Monday 15 December

Northerly rising to 20 knots in the morning, then rising to 30 knots west of Farewell Spit to Hawera in the evening. Sea becoming rough in the west. West of Farewell Spit to Hawera: Southwest swell 1 metre.

Tuesday 16 December

Northerly 30 knots, becoming westerly 20 knots west of Farewell Spit to Hawera in the morning. Becoming westerly 25 knots everywhere in the afternoon. Rough sea easing for a time. Northwest swell becoming moderate.

Wednesday 17 December

Southwest 25 knots. Sea rough. Westerly swell becoming heavy for a time.

Thursday 18 December

Southwest 20 knots. Moderate westerly swell.

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