weather warning

SIGNIFICANT HEAVY RAIN FOR THE SOUTH ISLAND WEST COAST AND CANTERBURY HEADWATERS


extended nz forecast

regional forecast

coastal marine forecast

leisure marine forecast

Friday

A cooler day with long fine spells, but also isolated showers.

Saturday

North Island, cloud increasing, with a few late showers in the north. South Island, cloud increasing, with rain developing in the west, and scattered late rain elsewhere.

Sunday

Rain for most places, possibly heavy, then mainly fine for the eastern North Island and Nelson, and a few showers elsewhere.

Chatham Islands Cloudy periods, a few showers, and southwesterlies on Friday, then mainly fine with light winds on Saturday. Rain and gale northerlies developing on Sunday.

WARNINGS FOR HEAVY RAIN AND SEVERE GALES FOR MUCH OF THE SOUTH ISLAND AND LOWER NORTH ISLAND

Northland to Taumarunui and Taupo, including Bay of Plenty

Cloudy periods today. A periof of rain around the middle of tomorrow, then clearing.

Gisborne, Hawkes Bay and Wairarapa

Mainly fine today. Scattered rain tomorrow, with northwesterly gales in exposed places, clearing from afternoon.

Taranaki and Taihape to Wellington, also Nelson and Marlborough

Rain this evening and overnight, with heavy falls, then clearing tomorrow, but showers return towards evening. Severe northwest gales in Wellington, Wairarapa and Marlborough easing tomorrow morning.

Buller, Westland and Fiordland

Heavy rain with possible thunderstorms, turning to showers tomorrow morning, then clearing south of Hokitika in the afternoon. Severe westerly gales about Fiordland early tomorrow.

Canterbury

Occasional rain today. Showers tomorrow afternoon and evening, with thunderstorms in the north. Severe northwest gales in exposed places, easing tomorrow morning.

Otago and Southland

Periods of rain, easing to showers tomorrow afternoon. Severe southwest gales in exposed places tomorrow morning.

Chatham Islands

Cloudy periods today. Occasional rain tomorrow.

Brett

Southwest 15 knots, becoming northwest 15 knots this afternoon. Northwest rising to 25 knots early Thursday morning, changing southwest 15 knots early Thursday afternoon. Sea becoming rough for a time. Northwest swell rising to 2 metres for a time. Poor visibility in a period of rain Thursday afternoon and evening.

Outlook following 3 days: Southwest 15 knots, gradually dying out Friday. Developing Saturday northeast 20 knots and rising early Sunday 30 knots with rough sea. Changing late Sunday southwest 20 knots. Moderate northerly swell developing on Sunday.

Kaipara

Southwest 15 knots, becoming northwest 20 knots this afternoon. Northwest rising to 30 knots early Thursday morning, changing southwest 20 knots late Thursday morning. Sea becoming rough for a time. Southwest swell rising to 3 metres. Northwest swell 2 metres developing for a time. Poor visibility in a period of rain Thursday morning and afternoon.

Outlook following 3 days: Southwest 20 knots, dying out Friday. Developing early Saturday northeast 15 knots, rising late Saturday 35 knots with very rough sea. Changing late Sunday southwest 20 knots. Moderate southwest swell, heavy for a time on Friday.Moderate northwest swell developing on Saturday, easing Sunday.

Bay Of Islands

Bay of Islands Recreational Marine Area.

Situation
A weak ridge over the upper North Island drifts northwards today as a trough approaches from the south. The trough crosses the North Island on Thursday, followed by a ridge on Friday. A deep low approaches New Zealand from the west on Saturday and moves over the South Island on Sunday, while the associated front crosses the North Island.

Warning
NIL warning for BRETT

Forecast
Strong wind advisory. Wednesday: Southwest 10 knots, becoming northwest 15 knots this afternoon. Sea slight. Cloudy periods. Thursday: Northwest rising to 25 knots gusting 35 knots early morning, changing southwest 20 knots in the afternoon. Sea becoming rough early morning, easing in the afternoon. Poor visibility in afternoon rain.

Outlook
Outlook until midnight Sunday: Friday: Southwest 15 knots, dying out. Mainly fine. Saturday: Northeast 25 knots developing. Cloud increasing, late showers. Sunday: Northerly 30 knots changing southwest 20 knots. Period of rain.