Tropical Cyclone Oma will likely crash into Australia's Queensland coast over the weekend but it doesn't mean New Zealand is safe from a barrage of wet and wild weather.

Hundreds of model outlooks for the cyclone, which overnight upgraded to a category 3, now agreed Oma was heading towards the Queensland coast, MetService meteorologist Lisa Murray said.

However, wild weather was on the way for New Zealand and should not be taken lightly as the weather watchdog was likely to issue a spate of weather watches and warnings tomorrow.

"Regardless of Oma, there is significant weather on the way," Murray said.

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Today, the cyclone would continue to move southwest, to lie over the southern Coral Sea by the end of Thursday.

Heavy rain, winds and storm surges from the cyclone uprooted trees, destroyed homes and food crops in Torba and Sanma provinces in Vanuatu.

The Vanuatu Daily Post reported the main damage on all islands was coastal destruction.

Widespread damage was also reported in New Caledonia after power was knocked out for thousands of homes as well as downing trees and flooding roads.

As many as 76 households in the village of Olboe had lost their taro gardens to flash flooding.

It would then track west-southwest towards the Queensland coast.

Showers were expected today in Auckland, possibly becoming heavy in the afternoon.

"On Thursday there would be more showers, with a moist northerly flow. On Friday showers will persist and become heavy."

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Forecasts then showed a low approaching the North Island from the Tasman Sea late on Friday and Saturday, bringing rain to much of the Island.

It would likely interact with cold air from the south to form a deep low, which would increase the intensity of wet weather to much of the island, Murray said.

The prediction would likely dampen celebrations at Tapapakanga Regional Park for the 20th anniversary of Splore festival, which will run from Friday night to Sunday.

It will also impact the thousands of people who will pile into Auckland's Western Springs Stadium to see popular band Six60 on Saturday.

The low approaching from the Tasman Sea could develop into a deep system east of the country on Sunday, bringing rain and strong winds to much of the country, especially in the east from Canterbury to Wairarapa.

Rain was expected in Northland on Friday through to Saturday morning.

Heavy rain was predicted in North Otago, Canterbury, Marlborough, Wellington and Wairarapa on Sunday.

That would also affect events in Wellington with the 20th anniversary of Wings Over Wairarapa from February 22 to 24.

Severe south to southwesterly gales were also expected in exposed places on Sunday including: Canterbury, Marlborough, Wellington, Horowhenua Kapiti Coast and Wairarapa including the Tararua District.

"On Friday things take a turn from some of the wet weather from the north, there will be some bands of rain and some heavy showers."

Your weather
Whangārei: Mostly cloudy with showers. Northeast breezes.

High 26C Low 20C

Auckland: Partly cloudy. A few showers from afternoon, chance heavy in the west. Light winds, afternoon sea breezes.

High 27C Low 20C

Tauranga: Partly cloudy. Light winds, afternoon sea breezes.

High 26C 20C

Whanganui: Fine, apart from cloud morning and night. Light winds, but afternoon westerlies.

High 27C Low 14C

Napier: Fine. Light winds, but afternoon sea breezes.

High 29C Low 16C

Wellington: Morning cloud breaking, then fine spells increasing. Strong northerlies gradually easing.

High 22C Low 17C

Christchurch: Mainly fine apart from morning cloud. Northwest changing southerly about midday, then turning northeast by evening.

High 29C Low 14C

Dunedin: Partly cloudy with a few spots of rain early morning then fine. Southwesterlies turning northeast by evening.

High 22C Low 13C