The local currency depreciated by K50 to the US dollar, Monday.
This was after trading closed in the range of five thousand 550 to five thousand 570 kwacha.
Standard Chartered bank Zambia said in its daily newsletter that the market was quiet for most of the day until in the afternoon when offshore players cashed in.
The bank predicts that the kwacha will weaken to a range of five thousand 500 to five thousand 600 kwacha Tuesday.
Last week the local unit hit five thousand 700 kwacha to one US dollar.
Copper and oil prices also weakened slightly.
The price of Copper closed at three thousand 200 dollars a tonne, down from three thousand 251 dollars a tonne last week.
Oil prices fell by about three dollars to close at 38 dollars per barrel.