Port Hedland has set a new monthly throughput record, delivering 44.5 million tonnes (Mt) in December 2016, a 17 per cent increase from the same month last year.
Iron ore exports for the month totalled 43.9Mt, a 17 per cent jump from December 2015.
However, imports were down six per cent from the same month last year, at 149,000Mt.
The Port of Dampier delivered a total monthly throughput of 15.9Mt, a slight increase from 2015, with imports up 10,000 tonnes to 83,000 tonnes.
Overall, the Pilbara Ports Authority delivered a total monthly throughput of 60.5Mt for December 2016, a 12 per cent increase from the same time last year.