on inflation, which is an event we do not believe the central bank is looking for," Barclays' analysts Guilherme Loureiro and Marcelo Salomon wrote in a research note.
Inflation concerns also drove Brazil's domestic yield curve higher. Interest-rate contracts maturing in January 2014 rose 1 basis point to 7.34 percent.
The Mexican peso briefly firmed past the psychologically important 13.000 per greenback level, which had not been touched since Nov. 7. before falling back to 13.0575.
Flavia Cattan-Naslausky, a strategist with RBS Securities, said the peso's fall was due to jitters ahead of the U.S.
Thanksgiving holiday on Thursday, which would thin market liquidity, as well as bad news from Greece.
"The external headlines have pushed a risk off environment here," she said.