Foreign reserves fell to $9.38 billion in the week that ended on Aug. 23, from $9.57 billion in the previous week, State Bank of Pakistan said on Thursday.
The State Bank of Pakistan said its reserves fell to $6.01 billion from $6.26 billion previously, while those held by commercial banks rose to $3.37 billion from $3.30 billion.
Foreign reserves hit a record high of $16.5 billion in October last year but have since been depleted by high payments for oil imports, and foreign investors withdrawing money because of the country's political uncertainty.
The rupee closed firmer at 75.9076.05 to the dollar on Thursday compared with Wednesday's close of 76.0010, data from Reuters showed.
But traders said the long-term outlook for the currency was still uncertain.
The rupee, which has lost about 23 percent of its value against the dollar this year, hit a record low of 77.15 on Aug. 22.