A well played 68 from Northlander Brad Wilson wasn't enough to get his Northern Knights side over the line in the Ford Trophy final.
Wilson top-scored for Northern Districts in the one-day final, which only had a smattering of fans watching it live, but Wellington won by four wickets with four balls to spare at Blake Park, Mount Maunganui.
The two top one-day teams enacted a plot where bat and ball duelled equally on Saturday.
Northern Districts made 232 for nine and Wellington reached the target courtesy of Luke Ronchi boundaries off consecutive Scott Kuggeleijn full tosses to start the final over.
It is Wellington's first trophy in 10 years and their first one-day title in 12. They made the most of their fourth-place finish on the ladder.