Container volumes at Ports of Auckland were 193,882 TEUs for the three months ended March 31, down 7.4 percent compared to the same period last year.
The drop follows record high container volumes recorded at the country's largest container port between July and December last year.
Imported vehicles were down 54.4 percent compared to the same quarter last year.
Total ship calls numbered 406, down from 438.
However, there was some positive news, with March seeing a five percent year-on-year increase in full export containers.
The Port's container terminals hit new productivity highs during the quarter, with a 10.9 percent increase in crane rate and 3.6 percent decrease in staff hours per container compared to the same quarter last year.
CargoNews Asia