Asian currencies weakened Tuesday as the U.S. dollar gained strength ahead of key economic data and the Federal Reserve's January meeting minutes. Market holidays across most of the region kept trading volumes thin, limiting price movements. The dollar index futures rose slightly in Asian trade, extending overnight gains.

Focus this week is squarely on a swathe of U.S. economic cues, including the release of the Federal Reserve's January meeting minutes on Wednesday. The minutes come after the Fed left interest rates unchanged and warned that risks to inflation and the labor market still remained. Since then, payrolls and consumer inflation data offered mixed cues on the world's largest economy.

Personal consumption expenditures data for December, due Friday, will be a key reading for markets. The print is the Fed's preferred inflation gauge and is widely expected to factor into long-term interest rate projections. The Japanese yen fell 0.2% after fourth-quarter GDP data read substantially weaker than expected, raising concerns over slowing Japanese growth. Meanwhile, the Chinese yuan's offshore pair rose 0.1% but remained close to near three-year lows.