Coastal Forecasts

Plenty

Warning: Nil

Friday: Northerly rising to 25 knots this morning, changing westerly 25 knots in the afternoon. Sea becoming rough. Northeast swell 3 metres, easing. Poor visibility in rain.

Saturday: Westerly 20 knots, turning southerly 25 knots in the morning. Sea becoming rough. Moderate northerly swell dying out.

Sunday: Southerly 25 knots, becoming southerly 15 knots but southeast 25 knots offshore late. Sea rough, easing inshore.

Monday: Southerly 20 knots but southeast 30 knots offshore. Becoming southeast 20 knots everywhere early. Rough sea offshore easing.

Issued: 3:11am Friday 8 Aug 2025

Colville

Warning: Nil

Friday: Northerly 25 knots changing southwest 25 knots in the afternoon. Sea rough. Northeast swell 3 metres, easing. Poor visibility in morning and afternoon rain. Possible morning thunderstorms in the north.

Saturday: Southwest 25 knots. Sea rough. Moderate northeast swell dying out. Moderate southeast swell developing.

Sunday: Southerly 20 knots. Moderate southeast swell.

Monday: Southeast 25 knots. Sea rough. Moderate southeast swell.

Issued: 3:11am Friday 8 Aug 2025

Brett

Warning: Nil

Friday: Northerly 20 knots. Changing southwest 20 knots in the afternoon. Sea moderate. Northeast swell 3 metres, easing. Poor visibility in morning and afternoon rain. Possible morning thunderstorms.

Saturday: Southwest 25 knots. Sea rough. Moderate southeast swell.

Sunday: Southerly 25 knots. Sea rough. Moderate southeast swell.

Monday: Southeast 25 knots. Sea rough. Moderate southeast swell.

Issued: 3:11am Friday 8 Aug 2025

Kaipara

Warning: Nil

Friday: Northerly 20 knots. Changing southwest 25 knots in the morning. Sea becoming rough. Southwest swell rising to 2 metres. Poor visibility in early rain. Possible morning thunderstorms.

Saturday: Southerly 25 knots. Sea rough. Southwest swell becoming heavy.

Sunday: Southeast 20 knots. Heavy southwest swell easing.

Monday: Easterly 15 knots, rising to southeast 25 knots early. Sea becoming rough. Moderate southwest swell.

Issued: 3:11am Friday 8 Aug 2025

Raglan

Warning: Nil

Friday: Northerly 25 knots. Changing southwest 20 knots late morning, rising to 30 knots in the evening. Rough sea easing for a time. Southwest swell rising to 2 metres. Poor visibility in periods of rain.

Saturday: Southwest 35 knots but southerly 25 knots south of Kawhia Harbour. Becoming southerly 25 knots everywhere in the morning. Very rough sea easing. Southwest swell becoming heavy.

Sunday: Southerly 25 knots. Sea rough. Heavy southwest swell easing.

Monday: Southeast 20 knots. Moderate southwest swell easing.

Issued: 3:11am Friday 8 Aug 2025

Stephens

Warning: Nil

Friday: Northerly 30 knots. Becoming westerly 20 knots in the morning, rising to southwest 30 knots in the evening. Rough sea easing for a time. West of Farewell Spit to Hawera: Southwest swell rising to 3 metres offshore. Elsewhere: Westerly swell rising to 2 metres. Poor visibility in periods of rain.

Saturday: Southerly 25 knots, easing to 15 knots in the morning, rising to 30 knots east of Farewell Spit to Hawera in the afternoon. Rough sea easing for a time. Moderate westerly swell.

Sunday: Becoming southeast 40 knots but southerly 30 knots east of Farewell Spit to Hawera early. Sea becoming very rough in the west. Moderate westerly swell easing.

Monday: Easing to southeast 20 knots everywhere early. Very rough sea easing.

Issued: 3:11am Friday 8 Aug 2025

Cook

Warning: Gale warning

Friday: Northerly 35 knots, easing to northwest 25 knots in the morning. Changing southerly 35 knots in the evening. Very rough sea easing for a time. Southerly swell 1 metre developing. Poor visibility in periods of rain.

Saturday: Southerly 40 knots. Sea very rough. Southerly swell becoming heavy.

Sunday: Southerly 40 knots, easing to 30 knots later. Very rough sea easing. Heavy southerly swell easing.

Monday: Southerly 25 knots. Sea rough. Moderate southerly swell.

Issued: 3:11am Friday 8 Aug 2025

Castlepoint

Warning: Gale warning

Friday: Northerly 25 knots but 35 knots south of Cape Palliser. Becoming northerly 25 knots everywhere in the morning, easing to northwest 15 knots in the afternoon. Becoming southerly 35 knots but 25 knots in the north in the evening. Very rough sea in the south, easing for a time. Southwest swell 1 metre. Northeast swell 1 metre. Poor visibility in periods of rain.

Saturday: Southerly 30 knots. Sea rough. Southerly swell becoming heavy.

Sunday: Southerly 30 knots, easing to 20 knots later. Rough sea easing. Heavy southerly swell.

Monday: Southerly 20 knots. Heavy southerly swell easing.

Issued: 3:11am Friday 8 Aug 2025

Portland

Warning: Nil

Friday: Northerly 25 knots. Changing southwest 25 knots in the evening. Sea rough. Southwest swell 1 metre. Northeast swell 2 metres. Poor visibility in rain from afternoon.

Saturday: Southwest 25 knots, rising to southerly 35 knots in the morning. Sea becoming very rough. Moderate southerly swell, but moderate northwest swell north of East Cape, becoming heavy southerly swell everywhere.

Sunday: Southerly 35 knots, easing to 25 knots late. Very rough sea easing. Heavy southerly swell.

Monday: Southerly 25 knots, easing to 15 knots late. Rough sea easing. Heavy southerly swell easing.

Issued: 3:11am Friday 8 Aug 2025

Abel

Warning: Nil

Friday: Northerly 30 knots. Changing westerly 15 knots in the afternoon. Changing southeast 20 knots in the evening. Rough sea easing. Northerly swell 1 metre, easing. Poor visibility in periods of rain.

Saturday: Southerly 15 knots.

Sunday: Southerly 15 knots, easing to variable 10 knots early. Becoming southeast 15 knots late.

Monday: Southeast 15 knots.

Issued: 3:11am Friday 8 Aug 2025

Grey

Warning: Gale warning

Friday: Westerly 20 knots but northerly 35 knots north of Cape Foulwind. Becoming southwest 25 knots everywhere in the morning, then rising to 35 knots for a time in the afternoon. Sea becoming very rough for a time. Very long period southwest swell rising to 4 metres. Poor visibility in morning and afternoon rain.

Saturday: Southerly 20 knots, easing to 10 knots in the morning. Becoming southeast 10 knots but 20 knots north of Cape Foulwind in the afternoon. Heavy southwest swell easing.

Sunday: Becoming southeast 10 knots everywhere early. Moderate southwest swell.

Monday: Variable 10 knots. Moderate southwest swell easing.

Issued: 3:11am Friday 8 Aug 2025

Milford

Warning: Nil

Friday: Southwest 15 knots, rising to 25 knots this morning. Sea becoming rough. Very long period southwest swell rising to 5 metres. Poor visibility in morning showers.

Saturday: Southerly 25 knots, becoming southeast 10 knots but southerly 20 knots offshore in the afternoon. Rough sea easing. Heavy southwest swell.

Sunday: Becoming southerly 10 knots everywhere early. Heavy southwest swell easing.

Monday: Variable 10 knots. Moderate southwest swell.

Issued: 3:11am Friday 8 Aug 2025

Puysegur

Warning: Nil

Friday: Northwest 25 knots, turning southwest 30 knots in the morning. Sea rough. Very long period southwest swell rising to 5 metres. Poor visibility in rain, clearing in the morning. Possible morning thunderstorms.

Saturday: Southerly 20 knots. Heavy southwest swell.

Sunday: Southerly 15 knots, rising to 25 knots north of West Cape early. Sea becoming rough in the north. Heavy southwest swell easing.

Monday: Becoming southeast 20 knots everywhere early, easing to easterly 10 knots late. Rough sea in the north, easing. Moderate southwest swell.

Issued: 3:11am Friday 8 Aug 2025

Foveaux

Warning: Nil

Friday: Southwest 30 knots. Sea rough. Very long period southwest swell rising to 5 metres offshore. Poor visibility in rain, clearing in the morning. Possible morning thunderstorms.

Saturday: Southwest 25 knots, easing to southerly 15 knots in the afternoon. Rough sea easing. Heavy southwest swell.

Sunday: Southwest 10 knots. Heavy southwest swell easing.

Monday: Southerly 10 knots. Moderate southwest swell.

Issued: 3:11am Friday 8 Aug 2025

Chalmers

Warning: Nil

Friday: Westerly 15 knots, rising to southwest 25 knots in the morning. Sea becoming rough. Very long period southwest swell rising to 4 metres offshore. Fair visibility in showers.

Saturday: Southwest 25 knots, easing to southerly 15 knots in the evening. Rough sea easing. Heavy southwest swell easing.

Sunday: Southwest 15 knots. Moderate southerly swell.

Monday: Southwest 15 knots. Moderate southerly swell.

Issued: 3:11am Friday 8 Aug 2025

Rangitata

Warning: Gale warning

Friday: Northwest 15 knots but northerly 25 knots offshore. Changing southerly 25 knots everywhere in the morning, rising to 35 knots for a time in the afternoon. Sea becoming very rough for a time. Long period southwest swell rising to 3 metres offshore. Fair visibility in showers.

Saturday: Southerly 25 knots. Sea rough. Moderate southerly swell.

Sunday: Southerly 20 knots, easing to southwest 10 knots early. Moderate southerly swell.

Monday: Southerly 15 knots. Moderate southerly swell.

Issued: 3:11am Friday 8 Aug 2025

Conway

Warning: Gale warning

Friday: Northerly 35 knots, but 20 knots south of Kaikoura Peninsula. Changing southwest 15 knots everywhere in the morning, rising to 25 knots in the afternoon, and rising to 35 knots for a time in the evening. Very rough sea easing for a time. Southerly swell 1 metre. Northeast swell 1 metre. Poor visibility in periods of rain.

Saturday: Southerly 30 knots but southwest 40 knots north of Kaikoura Peninsula. Becoming southerly 30 knots everywhere in the afternoon. Very rough sea in the north easing. Moderate southerly swell.

Sunday: Southerly 30 knots, becoming southerly 15 knots but 25 knots north of Kaikoura Peninsula later. Rough sea easing in the south. Moderate southerly swell.

Monday: Becoming southerly 15 knots everywhere early. Rough sea in the north, easing. Moderate southerly swell.

Issued: 3:11am Friday 8 Aug 2025

Chatham Islands

Warning: Nil

Friday: Northerly 25 knots. Sea rough. Southwest swell 1 metre. Northwest swell 1 metre developing. Fair visibility in showers.

Saturday: Northerly 25 knots, changing southerly 30 knots in the morning. Sea rough. Moderate northwest swell dying out. Heavy southwest swell developing.

Sunday: Southerly 30 knots, easing to 20 knots late. Rough sea easing. Heavy southwest swell.

Monday: Southerly 20 knots. Heavy southwest swell easing.

Issued: 3:11am Friday 8 Aug 2025