So far this year, the sol has strengthened 2.11% against the greenback, while in the last 12 months it has appreciated 3.61%.
The Central Reserve Bank of Peru auctioned a PEN2.4 billion overnight time deposit at an average interest rate of 4.11 percent.
It also auctioned PEN100 million certificates of deposit in nine-month and one-year terms, both at an average rate of 4.00%.
Meanwhile, Banco de Credito said in a report on Friday that it expects the sol to finish 2012 at PEN2.60 per dollar.
It said the appreciation of the sol against the greenback reflects the long-term fundamentals in Peru's economy, as well as seasonal factors that can strengthen the Peruvian currency.