At the Multi Commodity Exchange, copper for delivery in June traded lower by 50 paise, or 0.15 per cent, to Rs 324.85 per kg, in a business turnover of 972 lots.
Also, metal for delivery in far-month August was trading 40 paise, or 0.12 per cent down, at Rs 329.35 per kg in 41 lots.
Market analysts said weak trend in overseas markets where copper and other industrial metals extended declines after signs of flagging global economic growth rekindled demand concerns.