HANOI: Copper prices fell on Thursday as rising global inventories and falling premiums in top consumer China stoked demand worries and offset support from a weaker dollar amid dovish US central bank comments.

Three-month copper on the London Metal Exchange fell 0.2% to $9,047 a tonne by 0645 GMT, having risen as much as 0.9% earlier in the session.

"A weak physical market in China and concerns about rising US Treasury yields offset a soft US dollar," said commodities broker Anna Stablum of Marex Spectron in a note.

"Quiet Chinese metals markets with falling copper premiums weighed on sentiment," she added.

Yangshan copper premium was last at $67 a tonne, hovering around its lowest since Jan. 13, indicating weakening demand for imported copper into top consumer China.

Meanwhile, stockpiles are rising in exchange warehouses, with LME copper inventories hitting their highest since Dec. 30 at 107,275 tonnes, and ShFE stockpiles were last at their six-month high of 171,794 tonnes.

The US dollar was on the defensive on Thursday after the Federal Reserve signalled it was in no hurry to raise interest rates through all of 2023 even as it saw a swift recovery in the world's largest economy.

A weaker dollar made greenback-priced metals more attractive to holders of other currencies.

The most-traded May copper contract on the Shanghai Futures Exchange advanced 0.5% to 66,910 yuan ($10,304.15) a tonne.