Port Hedland, world's largest iron ore export port shipped 4% more iron ore in April over March as re stocking by China at lower prices took effect.
Exports to China increased by 1% in total volume while South Korea and Taiwan imported greater amounts of Australian iron ore in April.
Port Hedland is the home port to BHP Billiton, Rio Tinto and Fortescue Metals.
Exports rose 26% in April compared with the same month a year earlier as Australian iron producers expanded production. Shipments to China rose 30% on year.
Last Thursday, Port Hedland recorded its biggest shipment, breaking a previous iron ore export record as a bulk carrier PSU carried 255,000 tonnes of iron ore to China.