LONDON - Copper prices in London broke below $8,000 a tonne for the first time since Nov. 29 on Wednesday, extending this week's decline on signs of subdued Chinese demand that analysts expect to continue weighing on prices over the coming days.

Benchmark three-month copper on the London Metal Exchange (LME) fell by 1.8% to $7,960 a tonne in official open-outcry trading after hitting $7,944 for its weakest in nearly six months.

Copper hit a seven-month high of $9,550.50 in January after China removed its COVID curbs, but prices for the metal used in power and construction have since retreated.

"Copper has now given back all of its 2023 gains on weaker than expected Chinese demand, in what is normally a peak construction season, and subdued demand in the U.S. and Europe, with interest rate rises weighing on economic growth," said ING analyst Ewa Manthey.

"Hopes for higher demand from China have now faded with recent disappointing Chinese data underscoring a mixed picture for the world's biggest consumer of copper."

Copper is also weighed down by growing inventories in LME-registered warehouses , said Standard Chartered analyst Sudakshina Unnikrishnan.

"The much-anticipated rebound in China's copper imports and demand following the abrupt end to COVID lockdown policies has failed to materialise as of yet."

Rising LME inventories increased the discount on the cash contract against three-month copper to $66 a tonne, its widest since early 1990s.

Among other metals, LME aluminium was flat at $2,228 a tonne in official activity after hitting its lowest since Oct. 31 at $2,190.

Nickel was up 0.1% at $21,075 after touching $20,820 for its lowest since Sept. 5 while zinc was down 2.2% at $2,319.5 after sliding to $2,306, its weakest since October 2020.

Lead, meanwhile, dipped by 0.8% to $2,057.5 and tin retreated by 0.4% to $24,225.

(Reporting by Polina Devitt; Editing by David Goodman)