Campervan blown over on a busy road in New Zealand with a young family inside

The moment a 150km/h gust of wind knocks over a campervan with a holidaying family inside has been captured in terrifying dashcam footage.

The fully-loaded vehicle was blown over on New Zealand’s Mount Cook Road, which leads deep into the southern alps and the country’s tallest mountain, Aoraki, at 2pm on Sunday.

The dramatic video then shows the 7.5 metre long camper dragging over the surface of the road, pushed by gale force winds as wild weather battered the South Island.

A sedan traveling closely behind had to swerve off the road to avoid being hit by the sliding camper. 

The fully-loaded vehicle was blown over on New Zealand ‘s Mount Cook Road, which leads deep into the southern alps and the country’s tallest mountain, Aoraki, at 2pm on Sunday 

The moment a 150km/h gust of wind knocks over a campervan with a holidaying family inside has been captured in terrifying dashcam footage 

‘Whoah! Here we go! Here we go,’ the driver who recorded the incident said in the clip as wind started to ‘kick up’ on the mountain pass.

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‘I was following behind a couple of camper vans and noticed them starting to struggle in the wind and instead of passing them I stayed with them in case something happened,’ he told stuff.co.nz.

Other motorists also rushed to help the family.

Lanes in both directions were blocked, and the family members trapped inside the were miraculously uninjured.

The road was closed between Lake Pukaki and Aoraki/Mt Cook after the crash. 

The high winds caused havoc across the South Island and the nation’s capital, Wellington, forcing the cancellation of flights and interisland ferries.