Shanghai copper fell more than 2 percent to a three-month low weighed down by recent China data and previous losses in London, where it had tumbled 2.8 percent on Friday to breach psychological support of $8,000 a tonne. 

The fall in Shanghai copper today was mostly due to LME copper's fall last week. The news over the weekend including those involving Spain's debts, China's slowing power output and the widening of the yuan have caused investors to reevaluate last week's China GDP numbers, said Orient Futures derivatives director Andy Du.