A 17-year-old woman died after the vehicle she was driving lost its grip amid wet conditions on State Highway 10 in Kerikeri on Sunday.
Serious crash investigator Jeff Cramp said the teen was headed south when her vehicle lost grip on the wet surface, crossed the centre line and crashed into a north-bound ute.
The crash happened about midday at an area known as Bulls Gorge, where there is a large, sweeping right-hand bend.
Cramp said slippery roads caused by rain that came after weeks of dry weather helped contribute to the fatal crash.
He said there were crashes all over Northland on Sunday due to the roads getting hazardous with the bout of wet weather but most of the crashes were not serious.