Coastal Forecasts

Plenty

Warning: Nil

Saturday: Westerly 15 knots. Sea slight.

Sunday: Northwest 15 knots, turning to southwest 20 knots late. Northwest swell becoming moderate.

Monday: Southwest 20 knots, easing to variable 10 knots early. Moderate northwest swell dying out.

Tuesday: Variable 10 knots, becoming westerly 15 knots later.

Issued: 3:22am Saturday 22 Aug 2026

Colville

Warning: Nil

Saturday: Westerly rising to 15 knots this morning. Sea slight. Fair visibility in morning and afternoon showers.

Sunday: Northwest 20 knots, turning to southwest 20 knots late.

Monday: Southwest 15 knots, easing to variable 10 knots early.

Tuesday: Variable 10 knots.

Issued: 3:22am Saturday 22 Aug 2026

Brett

Warning: Nil

Saturday: Variable 10 knots, northwest 15 knots developing in the afternoon. Sea slight. Fair visibility in morning showers.

Sunday: Northwest 20 knots, turning to southwest 15 knots late.

Monday: Southerly 15 knots, easing to variable 10 knots early.

Tuesday: Variable 10 knots.

Issued: 3:22am Saturday 22 Aug 2026

Kaipara

Warning: Nil

Saturday: Variable 10 knots, northwest 15 knots developing in the afternoon. Sea slight. Long period southwest swell 1 metre. Fair visibility in morning showers.

Sunday: Northwest 15 knots, rising to 25 knots early, then becoming southwest 15 knots later. Sea becoming rough for a time. Moderate westerly swell.

Monday: Southerly 10 knots. Southwest swell becoming heavy.

Tuesday: Variable 10 knots. Heavy southwest swell easing.

Issued: 3:22am Saturday 22 Aug 2026

Raglan

Warning: Nil

Saturday: Westerly 15 knots, rising to northwest 25 knots in the evening. Sea becoming rough. Long period southwest swell 1 metre. Fair visibility in showers.

Sunday: Northwest 20 knots, rising to 30 knots early, then becoming southwest 20 knots later. Sea becoming rough for a time. Westerly swell becoming heavy.

Monday: Southwest 20 knots, easing to variable 10 knots early. Heavy southwest swell.

Tuesday: Variable 10 knots, becoming westerly 15 knots early. Heavy southwest swell easing.

Issued: 3:22am Saturday 22 Aug 2026

Stephens

Warning: Gale warning

Saturday: Northwest rising to 25 knots in the morning and to 35 knots in the evening. Sea becoming very rough. West of Farewell Spit to Hawera: westerly swell rising to 2 metres. Elsewhere, northwest swell 1 metre. Fair visibility in showers.

Sunday: Westerly 40 knots, becoming 20 knots but southwest 30 knots west of Farewell Spit to Hawera late. Very rough sea easing. Northwest swell becoming heavy.

Monday: Westerly 20 knots but southwest 30 knots west of Farewell Spit to Hawera, becoming westerly 20 knots everywhere early. Becoming westerly 30 knots but 20 knots west of Farewell Spit to Hawera later. Sea rough at times. Heavy westerly swell easing.

Tuesday: Becoming westerly 25 knots early, then easing to northwest 15 knots west of Farewell Spit to Hawera late. Sea becoming rough in the west for a time. Moderate westerly swell.

Issued: 3:22am Saturday 22 Aug 2026

Cook

Warning: Gale warning

Saturday: Northwest 25 knots. Rising to northwest 35 knots in the morning and to 45 knots in the evening. Sea becoming high. Southerly swell 1 metre, easing.

Sunday: Northwest 45 knots, easing to westerly 30 knots later. High sea easing. Moderate northerly swell dying out.

Monday: Northwest 25 knots. Sea rough.

Tuesday: Northwest 30 knots. Sea rough.

Issued: 3:22am Saturday 22 Aug 2026

Castlepoint

Warning: Gale warning

Saturday: Northwest rising to 25 knots but 35 knots south of Cape Palliser in the morning. Becoming northwest 40 knots everywhere in the evening. Sea becoming very rough everywhere. Long period southwest swell 2 metres, easing.

Sunday: Northwest 40 knots becoming westerly 25 knots later. Very rough sea easing. Moderate southwest swell developing.

Monday: Northwest 20 knots. Moderate southwest swell.

Tuesday: Northwest 25 knots. Sea rough. Moderate southwest swell.

Issued: 3:22am Saturday 22 Aug 2026

Portland

Warning: Nil

Saturday: Northwest 15 knots, rising to 25 knots in the evening. Sea becoming rough. Long period southerly swell 2 metres, easing.

Sunday: Northwest 25 knots. Sea rough. Moderate northwest swell north of East Cape.

Monday: Becoming westerly 20 knots early, then easing to variable 10 knots in the morning. Very rough sea in the north, easing. South of East Cape: Moderate southwest swell developing. North of East Cape: Moderate northwest swell.

Tuesday: Variable 10 knots, becoming westerly 20 knots north of East Cape early. South of East Cape: Moderate southwest swell. North of East Cape: Moderate northwest swell dying out.

Issued: 3:22am Saturday 22 Aug 2026

Abel

Warning: Gale warning

Saturday: Variable 10 knots but westerly 20 knots north of Separation Point. Becoming northwest 25 knots everywhere in the morning, rising to northwest 35 knots in the evening. Sea becoming very rough everywhere. Northerly swell 1 metre developing. Fair visibility in showers.

Sunday: Northwest 35 knots, easing to variable 10 knots later. Very rough sea easing. Moderate northerly swell easing.

Monday: Becoming variable 10 knots early, then becoming westerly 20 knots in the morning. Becoming westerly 10 knots but 20 knots north of Separation Point later. Rough sea easing for a time in the north.

Tuesday: Westerly 10 knots but 20 knots north of Separation Point, becoming northwest 20 knots everywhere early. Becoming variable 10 knots but northwest 20 knots north of Separation Point late.

Issued: 3:22am Saturday 22 Aug 2026

Grey

Warning: Gale warning

Saturday: Northwest 25 knots. Becoming northwest 35 knots south of Abut Head for a time late morning. Becoming northwest 35 knots north of Westport and south of Abut Head in the evening. Sea becoming very rough. Long period southwest swell 1 metre. Westerly swell 2 metres, developing. Poor visibility in rain.

Sunday: Westerly 35 knots but 45 knots south of Cape Foulwind. Becoming southwest 30 knots everywhere later. Sea becoming high for a time. Northwest swell becoming heavy.

Monday: Southwest 25 knots, becoming variable 10 knots but westerly 20 knots offshore early. Becoming westerly 20 knots everywhere later. Sea rough at times. Heavy westerly swell.

Tuesday: Westerly 20 knots, easing to southwest 10 knots south of Cape Foulwind late. Heavy westerly swell easing.

Issued: 3:22am Saturday 22 Aug 2026

Milford

Warning: Gale warning

Saturday: Northerly 30 knots, easing to northwest 20 knots in the morning. Becoming northwest 40 knots in the evening. Sea becoming very rough in the evening. Long period southwest swell 1 metre. Northwest swell rising to 3 metres for a time. Poor visibility in rain. Possible thunderstorms in the morning, becoming squally in the evening.

Sunday: Northwest 45 knots, becoming southwest 35 knots early. Becoming southwest 15 knots but westerly 25 knots offshore late. High sea easing. Heavy westerly swell.

Monday: Southwest 15 knots but westerly 25 knots offshore, becoming northwest 25 knots everywhere early. Sea becoming rough everywhere. Heavy westerly swell.

Tuesday: Northwest 25 knots, turning to southwest 20 knots early, then becoming variable 10 knots late. Rough sea easing. Heavy westerly swell.

Issued: 3:22am Saturday 22 Aug 2026

Puysegur

Warning: Storm warning

Saturday: Northwest 40 knots but 50 knots south of West Cape. Becoming northwest 25 knots but 35 knots in the south in the morning. Becoming northwest 45 knots everywhere in the evening. High sea easing for a time. Long period southwest swell 1 metre. Northwest swell 4 metres. Poor visibility in rain. Possible thunderstorms west of Puysegur Point in the morning, becoming squally in the evening.

Sunday: Northwest 45 knots. Easing to westerly 30 knots late. High sea easing. Heavy westerly swell.

Monday: Northwest 35 knots. Sea very rough. Heavy westerly swell.

Tuesday: South of West Cape: Northwest 35 knots. Elsewhere: Northwest 35 knots, easing to westerly 25 knots early, then to 15 knots later. Very rough sea, easing in the north. Heavy westerly swell.

Issued: 3:22am Saturday 22 Aug 2026

Foveaux

Warning: Gale warning

Saturday: Northwest 35 knots. Becoming northwest 20 knots late morning, rising to 30 knots for a time in the afternoon and evening. Very rough sea easing. Long period southwest swell 1 metre. Poor visibility in showers.

Sunday: Northerly 20 knots, becoming westerly 40 knots early, then easing to 30 knots late. Sea becoming very rough for a time. Southwest swell becoming heavy.

Monday: Northwest 30 knots. Sea rough. Heavy southwest swell easing.

Tuesday: Westerly 30 knots. Sea rough. Southwest swell becoming heavy.

Issued: 3:22am Saturday 22 Aug 2026

Chalmers

Warning: Nil

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

Sunday: Northerly 20 knots, becoming westerly 35 knots early, then easing to 20 knots late. Sea becoming very rough for a time. Heavy southwest swell developing.

Monday: Northwest 25 knots. Sea rough. Heavy southwest swell easing.

Tuesday: Northerly 20 knots, turning to westerly 25 knots early. Sea becoming rough. Southwest swell becoming heavy.

Issued: 3:22am Saturday 22 Aug 2026

Rangitata

Warning: Nil

Saturday: Northerly 20 knots, rising to 30 knots in the evening. Sea becoming rough. Southerly swell 1 metre.

Sunday: Northerly 25 knots, turning to westerly 30 knots early. Easing to westerly 15 knots but 25 knots offshore late. Rough sea, easing inshore. Moderate southwest swell developing.

Monday: Becoming northwest 15 knots early, then rising to 25 knots offshore in the morning. Becoming northerly 15 knots everywhere later. Sea rough offshore at times. Moderate southwest swell.

Tuesday: Northerly 20 knots, becoming variable 10 knots but northwest 20 knots offshore early. Becoming southerly 20 knots everywhere later. Moderate southwest swell.

Issued: 3:22am Saturday 22 Aug 2026

Conway

Warning: Gale warning

Saturday: Westerly 20 knots. Becoming northwest 20 knots but 35 knots north of Kaikoura Peninsula in the morning. Sea becoming very rough in the north. Long period southerly swell 1 metre.

Sunday: Northerly 30 knots, turning to westerly 30 knots early, then easing to 20 knots late. Rough sea easing. Moderate southwest swell developing.

Monday: Northwest 20 knots, easing to variable 10 knots early. Moderate southwest swell.

Tuesday: Variable 10 knots, becoming northwest 20 knots early. Becoming variable 10 knots but northwest 20 knots north of Kaikoura Peninsula late. Moderate southwest swell easing.

Issued: 3:22am Saturday 22 Aug 2026

Chatham Islands

Warning: Nil

Saturday: Variable 10 knots, northwest 20 knots developing in the morning. Sea becoming moderate. Long period southwest swell 3 metres easing.

Sunday: Northwest 20 knots, rising to 30 knots early. Sea becoming rough. Northwest swell becoming heavy.

Monday: Westerly 30 knots, easing to 20 knots later. Rough sea easing. Heavy northwest swell dying out. Heavy southwest swell developing.

Tuesday: Westerly 15 knots, rising to northwest 25 knots early. Sea becoming rough. Heavy southwest swell easing.

Issued: 3:22am Saturday 22 Aug 2026