People are being urged to keep up to date with changing weather before hitting the road.
Wet weather is sweeping eastward across the North Island, with a heavy rain warning in place for Taranaki, Eastern Bay of Plenty, Gisborne and Nelson.
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Andy Knackstedt from the NZTA says motorists should be careful.
"There's some heavy rain in the forecast and there's even hail in parts of the country. It's just really important that people are patient and take their time and make sure that they get home safely."
Meteorologist April Clark says rain will affect the roads and cause surface flooding at times today.
"Plan for more time, keep an eye on Metservice forecasts and also our rain radar so you can see exactly where that rain band is."
Ms Clark says parts of Wellington, Taranaki and Bay of Plenty will see heavy rain in the region.
"Places like Wellington are still very cloudy and places like Hawke's Bay and Gisborne - the front is moving over them as well."
William Nepe from the Metservice told Newshub the front over the North Island isn't going anywhere fast.
"This feature is slow moving...It will be a pretty dreary day for much of the upper North Island."
One person has died on our roads this Easter weekend, in a crash near Huntly.