These strong winds will generate large waves and heavy long-period swell, especially on Sunday.
A NIWA graphic shows the risk of swell reaching heights of over 7 metres offshore or along southern coastlines.
“For the south and east coast of the North Island, high tide Sunday evening is one to watch for any impacts,” it wrote.
This includes:
- Possible beach erosion
- Risk for coastal flooding
- Debris being pushed onto the coast