Coastal Weather

Issued at 20:40 on Friday 19 December 2025.

Abel

Weather warning: Gale warning

Friday 19 December

Northwest 25 knots but 35 knots north of Separation Point. Easing to westerly 25 knots everywhere in the evening. Sea very rough in the north, easing. Poor visibility in rain. Possible thunderstorms west of Farewell Spit.

Saturday 20 December

Westerly 15 knots, rising to 25 knots north of Separation Point in the morning, easing to 15 knots in the evening. Sea becoming rough for a time.

Sunday 21 December

Westerly 15 knots, becoming northeast 15 knots but northwest 20 knots north of Separation Point in the morning.

Monday 22 December

Easing to variable 10 knots everywhere early, becoming northwest 20 knots in the morning, easing to 10 knots late.

Tuesday 23 December

Northwest 10 knots, rising to 25 knots early. Easing to westerly 15 knots late. Sea becoming rough for a time.

Brett

Friday 19 December

Westerly 15 knots, rising to 25 knots in the evening. Sea becoming rough.

Saturday 20 December

Westerly 25 knots, easing to southwest 15 knots late evening. Rough sea easing. Poor visibility in showers, easing in the evening. Possible morning thunderstorms.

Sunday 21 December

Southwest 15 knots.

Monday 22 December

Southwest 10 knots, turning northwest 15 knots early.

Tuesday 23 December

Northwest 15 knots, rising to 25 knots early. Sea becoming rough.

Castlepoint

Weather warning: Gale warning

Friday 19 December

Northwest 35 knots. Changing southwest 35 knots everywhere late evening. Sea very rough. Long period southwest swell 1 metre. Northerly swell 1 metre developing. Poor visibility in rain.

Saturday 20 December

Southwest 30 knots, easing to 20 knots early morning. Becoming variable 10 knots in the evening. Rough sea easing. Southwest swell rising to 2 metres for a time. Northerly swell 1 metre.

Sunday 21 December

Westerly 10 knots, rising to southwest 20 knots in the morning, easing to 10 knots in the evening. Moderate southerly swell.

Monday 22 December

Westerly 10 knots, becoming northwest 15 knots but northeast 20 knots south of Cape Palliser later. Moderate southerly swell.

Tuesday 23 December

Becoming northerly 20 knots everywhere early, becoming westerly 20 knots in the morning. Moderate southerly swell easing.

Chalmers

Friday 19 December

Southerly 25 knots. Sea rough. Southwest swell 2 metres. Poor visibility in heavy rain, easing evening.

Saturday 20 December

Southwest 25 knots. Sea rough. Long period southwest swell rising to 2 metres. Fair visibility in a few showers.

Sunday 21 December

Southwest 25 knots, easing to 15 knots in the evening. Rough sea easing. Moderate southwest swell.

Monday 22 December

Southwest 10 knots, changing easterly 15 knots early. Rising to northeast 25 knots later. Sea becoming rough. Moderate southerly swell.

Tuesday 23 December

Northeast 25 knots, easing to northerly 10 knots early. Changing southwest 15 knots later. Rough sea easing. Moderate southeast swell.

Chatham Islands

Friday 19 December

Northwest 15 knots. Sea slight. Long period southwest swell 2 metres easing. Northerly swell 1 metre. Poor visibility in evening rain.

Saturday 20 December

Northwest 15 knots, rising to 25 knots in the morning. Sea becoming rough. Long period southwest swell rising to 3 metres. Poor visibility in rain, turning to showers in the evening. Possible morning thunderstorms.

Sunday 21 December

Westerly 20 knots. Moderate southwest swell.

Monday 22 December

Westerly 20 knots. Moderate southwest swell.

Tuesday 23 December

Westerly 20 knots, easing to northwest 10 knots early. Becoming northeast 15 knots later. Moderate southwest swell.

Colville

Friday 19 December

Westerly 15 knots, rising to 25 knots in the evening. Sea becoming rough.

Saturday 20 December

Westerly 25 knots, easing to southwest 15 knots late evening. Rough sea easing. Poor visibility in showers, easing in the morning. Possible thunderstorms before dawn.

Sunday 21 December

Southwest 20 knots, easing to 10 knots in the evening.

Monday 22 December

Southwest 10 knots, turning northwest 15 knots early.

Tuesday 23 December

Northwest 15 knots, rising to 25 knots early. Sea becoming rough.

Conway

Weather warning: Gale warning

Friday 19 December

Southwest 45 knots, easing to 30 knots late evening. High sea easing. Long period southwest swell 1 metre. Northeast swell 1 metre developing. Poor visibility in rain. Possible evening thunderstorms about Pegasus Bay.

Saturday 20 December

Southwest 25 knots, easing to 15 knots in the morning. Becoming variable 10 knots but southwest 20 knots south of Kaikoura Peninsula in the afternoon. Becoming southwest 20 knots everywhere late evening. Rough sea easing. Long period southwest swell rising to 2 metres for a time. Northeast swell 1 metre. Fair visibility in a few showers.

Sunday 21 December

Southwest 15 knots, rising to 25 knots in the morning. Easing to southerly 15 knots in the afternoon. Sea becoming rough for a time. Moderate southerly swell.

Monday 22 December

Southwest 10 knots, changing northeast 15 knots early. Moderate southerly swell.

Tuesday 23 December

Becoming southerly 15 knots but northerly 25 knots north of Kaikoura Peninsula early. Sea becoming rough in the north. Moderate southerly swell easing.

Cook

Weather warning: Gale warning

Friday 19 December

Northwest 40 knots. Becoming westerly 25 knots but southerly 30 knots south of Cape Terawhiti late evening. Very rough sea easing. Southerly swell 1 metre, dying out. Poor visibility in rain.

Saturday 20 December

Westerly 25 knots but southerly 30 knots south of Cape Terawhiti. Becoming northwest 20 knots everywhere in the morning. Changing southerly 20 knots early evening. Rough sea easing. Southerly swell 1 metre. Fair visibility in morning showers.

Sunday 21 December

Southerly 20 knots. Easing to southeast 10 knots in the afternoon. Southerly swell becoming moderate.

Monday 22 December

Variable 10 knots, becoming northerly 20 knots early. Moderate southerly swell easing.

Tuesday 23 December

Northwest 25 knots, becoming northerly 10 knots but northwest 20 knots north of Cape Terawhiti late. Rough sea easing.

Foveaux

Friday 19 December

Southwest 25 knots. Sea rough. Southwest swell rising to 3 metres.

Saturday 20 December

Southwest 25 knots. Sea rough. Long period southwest swell rising to 3 metres for a time. Fair visibility in a few showers.

Sunday 21 December

Southwest 20 knots, easing to southerly 10 knots in the evening. Moderate southwest swell.

Monday 22 December

Becoming easterly 20 knots early. Rising to northeast 30 knots east of Slope Point to Shelter Point later. Sea becoming rough in the east. Moderate southerly swell dying out. Moderate easterly swell developing.

Tuesday 23 December

Becoming westerly 30 knots but northerly 30 knots east of Slope Point to Shelter Point early. Sea rough. Moderate southeast swell dying out. Moderate southwest swell developing.

Grey

Weather warning: Gale warning

Friday 19 December

Northwest 25 knots but southwest 30 knots south of Greymouth. Becoming southwest 35 knots everywhere in the evening. Sea becoming very rough everywhere. Southwest swell rising to 3 metres. Poor visibility in heavy rain, clearing evening. Possible afternoon thunderstorms.

Saturday 20 December

Southwest 30 knots. Sea rough. Long period southwest swell rising to 3 metres.

Sunday 21 December

Southwest 25 knots, easing to 15 knots in the morning. Rough sea easing. Moderate southwest swell.

Monday 22 December

Westerly 10 knots, changing northeast 20 knots early, rising to 30 knots south of Abut Head late. Sea becoming rough in the south. Moderate southwest swell dying out.

Tuesday 23 December

Becoming northerly 20 knots everywhere early, changing southwest 25 knots in the morning, easing to 15 knots later. Sea rough at times. Northwest swell becoming moderate.

Kaipara

Friday 19 December

Westerly 15 knots, rising to 25 knots south of Tauroa Point in the evening. Sea becoming rough. Long period southwest swell 2 metres. Fair visibility in showers.

Saturday 20 December

Westerly 15 knots but 25 knots south of Tauroa Point, easing to southwest 15 knots everywhere in the afternoon. Sea rough in the south, easing. Long period southwest swell 2 metres. Poor visibility in showers, easing in the morning.

Sunday 21 December

Southwest 15 knots. Moderate southwest swell.

Monday 22 December

Westerly 15 knots. Moderate southwest swell easing.

Tuesday 23 December

Northwest 15 knots, rising to 25 knots early. Sea becoming rough. Westerly swell becoming moderate.

Milford

Friday 19 December

Southwest 25 knots. Sea rough. Southwest swell rising to 3 metres.

Saturday 20 December

Southwest 25 knots. Sea rough. Long period southwest swell rising to 3 metres.

Sunday 21 December

Southwest 25 knots, easing to 15 knots in the morning, then to variable 10 knots in the evening. Rough sea easing. Moderate southwest swell easing.

Monday 22 December

Variable 10 knots, becoming northeast 25 knots early, rising to 35 knots later. Sea becoming very rough. Moderate northeast swell developing.

Tuesday 23 December

Changing westerly 25 knots early, easing to 15 knots in the morning. Becoming northerly 15 knots late. Very rough sea easing. Moderate northerly swell dying out. Heavy westerly swell developing.

Plenty

Friday 19 December

Westerly 25 knots. Sea rough.

Saturday 20 December

Westerly 30 knots, easing to 20 knots in the evening. Rough sea easing. Poor visibility in showers, easing in the morning. Possible thunderstorms before dawn.

Sunday 21 December

Southwest 20 knots.

Monday 22 December

Southwest 15 knots, turning northwest 15 knots early.

Tuesday 23 December

Northwest 15 knots, rising to 25 knots early. Easing to westerly 15 knots inshore late. Sea becoming rough.

Portland

Friday 19 December

Northwest 15 knots, but westerly 25 knots north of East Cape. Becoming northwest 25 knots everywhere in the evening. Sea becoming rough everywhere. Southwest swell 2 metres easing. Northerly swell 1 metre developing, but 2 metres developing north of East Cape.

Saturday 20 December

Northwest 20 knots, becoming southerly 20 knots but westerly 25 knots north of East Cape in the morning. Sea becoming rough in the north. Southwest swell rising to 2 metres.

Sunday 21 December

Southwest 25 knots, becoming southerly 15 knots but westerly 20 knots north of East Cape in the morning. Rough sea easing. Moderate southwest swell.

Monday 22 December

Easing to southwest 10 knots everywhere early, becoming northeast 20 knots but westerly 20 knots in the north in the morning. Moderate southwest swell, becoming moderate southerly swell south of East Cape, but dying out elsewhere.

Tuesday 23 December

Northerly 25 knots but westerly 25 knots north of East Cape. Sea rough. Moderate southerly swell south of East Cape, becoming moderate southwest swell everywhere.

Puysegur

Friday 19 December

Southwest 20 knots. Sea moderate. Southwest swell 3 metres.

Saturday 20 December

Southwest 25 knots, easing to 15 knots in the evening. Rough sea easing. Long period southwest swell 3 metres. Fair visibility in a few showers.

Sunday 21 December

Southerly 15 knots. Moderate southwest swell.

Monday 22 December

Southeast 15 knots, becoming northeast 35 knots early. Sea becoming very rough. Moderate southerly swell dying out. Moderate northeast swell developing.

Tuesday 23 December

Becoming northwest 25 knots early. Becoming northwest 15 knots but westerly 25 knots south of West Cape later. Very rough sea easing. Moderate northeast swell dying out. Heavy westerly swell developing.

Raglan

Friday 19 December

Westerly 20 knots, rising to 30 knots in the evening. Sea becoming rough. Long period southwest swell 2 metres. Poor visibility in rain. Possible thunderstorms.

Saturday 20 December

Westerly 30 knots, easing to southwest 20 knots in the morning. Rough sea easing. Long period southwest swell 2 metres. Poor visibility in showers, easing in the morning.

Sunday 21 December

Southwest 20 knots, easing to 10 knots in the evening. Moderate southwest swell.

Monday 22 December

Westerly 10 knots, rising to northwest 20 knots later. Moderate southwest swell easing.

Tuesday 23 December

Northwest 25 knots, easing to westerly 15 knots later. Rough sea easing. Westerly swell becoming moderate.

Rangitata

Weather warning: Gale warning

Friday 19 December

Southwest 35 knots, easing to 25 knots in the evening. Very rough sea easing. Southwest swell rising to 2 metres. Poor visibility in rain. Possible evening thunderstorms.

Saturday 20 December

Southwest 25 knots. Sea rough. Long period southwest swell rising to 2 metres. Fair visibility in a few showers.

Sunday 21 December

Southwest 25 knots, easing to southerly 15 knots in the afternoon. Rough sea easing. Moderate southerly swell.

Monday 22 December

Southwest 10 knots, changing northeast 20 knots later. Moderate southerly swell.

Tuesday 23 December

Northeast 20 knots, changing southerly 10 knots early. Moderate southeast swell easing.

Stephens

Weather warning: Gale warning

Friday 19 December

Northwest 35 knots, easing to westerly 25 knots late evening. Very rough sea easing. West of Farewell Spit to Hawera: Long period southwest swell 2 metres. Elsewhere: Westerly swell rising to 2 metres. Poor visibility in rain. Possible thunderstorms.

Saturday 20 December

Southwest 20 knots, rising to 30 knots for a time in the evening. Sea becoming rough. West of Farewell Spit to Hawera: Southwest swell 2 metres. Elsewhere: Westerly swell 2 metres. Fair visibility in morning showers.

Sunday 21 December

Southwest 25 knots, easing to 15 knots in the morning. Rough sea easing. Moderate westerly swell easing.

Monday 22 December

Westerly 20 knots.

Tuesday 23 December

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

Weather data provided by