Lower oil prices would reduce the import bill for the country, which buys about 80 per cent of its crude requirements from overseas, and help to narrow the current account deficit.
In a deal with the US and other world powers yesterday, Iran agreed to limit its nuclear programme to get partial relief from sanctions. Oil prices fell on expectations curbs on Iran's crude exports would eventually be lifted.
At the interbank foreign exchange market, the rupee opened strong at 62.67 a dollar from the previous close of 62.87 and moved in a range of 62.44 to 62.70 before ending at 62.50, a rise of 37 paise or 0.59 per cent.
On Friday, the Reserve Bank of India said banks have time until December 31 to deliver loans from international or multilateral financial institutions provided they were sanctioned on or before November 31, the last day of a special swap window for overseas foreign currency borrowings.
"Rupee closed strong for the day against the dollar, taking cues from local equities which finished positive after news of the key deal between world powers and Iran on its controversial nuclear programme," said Pramit Brahmbhatt, CEO of Alpari Financial Services (India). "RBI has extended the special forex swap window till December 31st, which will further help the rupee to trade strong.