At 5pm, the rand had weakened 0.6 percent to R13.0823 to the dollar from a Monday close of R13.0175 in New York.
The rand touched its firmest level since March 30 in the previous session, rallying as far R12.88 before pulling back as the greenback and the euro rallied following first round results of the French election.
Traders also said technical resistance around R12.95 had seen selling out of the rand as investors covered short positions.
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Last week the rand shook off political concerns following credit downgrades to junk by two ratings agencies triggered by President Jacob Zuma’s sudden axing of the finance minister, to gain about 2 percent.