Its rival, Port of Tanjung Pelepas in Johor, was listed second busiest, handling 35.4 per cent of the country's total container throughput, reported Business Times.
Port Klang moved 4.31 million TEUs of cargo in the January-June 2010 period, up 29.3 per cent from 3.33 million TEUs a year earlier, as the global economic recovery boosted cargo traffic, said Port Klang Authority (PKA) general manager Kee Lian Yong.
It handled 856,110 TEUs of exports, up 25.8 per cent from a year earlier, and the volume of imports rose 18.2 per cent to 828,082 TEUs. Transhipment volume rose 34.5 per cent to 2.62 million TEUs.
Kee said Westports led the way in the first half of 2010 with a 30 per cent increase in container volume from the same period in 2009, handling 2.65 million TEUs, while Northport saw a 28 per cent increase to 1.66 million TEUs last year.
"We are on track to achieve our stretch target of 8.4 million TEUs for the whole year, where Westports is projected to handle 5.2 million TEUs and Northport 3.2 million TEUs. The fourth quarter is traditionally the busiest quarter of the year," Kee said.
Port Klang moved 7.31 million TEUs last year, a decline of 8.3 per cent compared with 7.97 million TEUs recorded in 2008.
"The projection for 2011 is a growth of 10 to 12 per cent in container volume," said Kee.
Meanwhile, in terms of tonnage handled, traffic through Port Klang in the first five months (January-May) of this year increased by 36.8 per cent to 65.54 million tonnes from 47.90 million tonnes a year earlier.