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130km/h winds, 6m waves forecast for long weekend across NZ

Author
Natasha Gordon,
Publish Date
Sat, 31 May 2025, 8:07am
Large waves crash against the seawall on Tamaki Drive. Photo / Supplied
Large waves crash against the seawall on Tamaki Drive. Photo / Supplied

130km/h winds, 6m waves forecast for long weekend across NZ

Author
Natasha Gordon,
Publish Date
Sat, 31 May 2025, 8:07am
  • A strong west to southwest flow will bring 130km/h winds and 6m waves this weekend. 
  • Warnings are in place for severe gales and large swells, especially in the South Island. 
  • Monday is expected to be calmer, with the best conditions for outdoor activities. 

This long King鈥檚 Birthday weekend, a strong west to southwest flow is set to hit the country with severe 130km/h winds and 6m waves. 

Warnings and watches for severe gales are in place for several areas, with large swells expected to build along most coastlines, especially along the western South Island, MetService said. 

鈥淔or those planning a beach getaway, these winds will build large southwest swells which will be felt throughout the weekend,鈥 MetService meteorologist Michael Pawley said. 

鈥淭he most exposed coastlines include the lower and western South Island, and the western North Island all the way up to Northland. 

鈥淢onday will be the pick of the long weekend. The winds look to calm, so it鈥檒l be the best day to head outdoors.鈥 

This comes after a week of hectic weather with marble-sized hail, thunderstorms and severe winds that lashed the upper North Island. 

On Thursday night, a tornado struck Nawton residents in Hamilton. 

A young Hamilton family said they felt the 鈥渟trongest winds ever鈥 as a tornado ripped past their home, sending trees and fences tumbling down, ripping off roofs and causing trampolines to fly through the air. 

MetService meteorologist Samkelo Magwala told the Herald there will be lingering showers on and off throughout the weekend for some places, 鈥渂ut nothing hectic except the wind鈥. 

鈥淭he main issue is wind, although the rainfall will pick up late Sunday in the Fiordland region.鈥 

He said the main regions of concern when it comes to strong winds are Wairarapa and Southland. 

Magwala said Auckland should expect to see on-and-off showers, but likely won鈥檛 see anything too severe. 

Magwala said the South Island is in for a chilly start to mornings this holiday weekend. 

鈥淪ingle-digit minimum temperatures and maximum temperatures will be in the mid-teens for the South Island.鈥 

Current warnings and watches 

Hawke鈥檚 Bay, from Napier southwards, and the Tararua District are under a strong orange wind warning that is set to stay in place until 10pm on Saturday. 

Locals in these areas could expect to see severe gale westerlies gusting 130km/h in exposed places, the MetService said. 

Damage to trees, powerlines, and unsecured structures is possible. 

鈥淒riving may be difficult, especially for high-sided vehicles and motorcycles,鈥 MetService said. 

The Chatham Islands are also under the same wind warning that is forecast to lapse by 10am on Sunday. 

The Chatham Islands are forecast to experience severe gale westerlies gusting 120km/h in exposed places, turning southwesterly during Saturday afternoon with squally thunderstorms possible. 

Southern Fiordland, Southland, Stewart Island, Clutha and Dunedin are also under the same wind warning until 3pm on Saturday. 

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