In the previous week, reserves had plunged $2.754 billion to $311.427 billion.
In the week to July 25, 2014, the reserves had touched $320.56 billion, an inch away from the life-time high of $320.79 billion on September 2, 2011.
The foreign currency assets, a major constituent of overall reserves, increased by $1.297 billion to $286.885 billion, RBI said.
Foreign currency assets, expressed in dollar terms, include the effect of appreciation and depreciation of non-US currencies such as the euro, pound and yen held in reserves.
The country's gold reserves remained unchanged at $20.013 billion.
Special Drawing Rights (SDRs) were up $9.3 million to $4.293 billion, while the country's reserve position with the IMF rose $3.3 million to $1.544 billion during the week, the RBI data showed.
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