Kemp, the runner-up for National League most valuable player honors in 2011, has struggled in his rehab assignment from an ankle injury.
"He doesn't feel good yet at the plate," manager Don Mattingly told the Los Angeles Times on Sunday, "He's not pushing us to say, 'I want to be there tomorrow.' "
Kemp, playing for Class-A Rancho Cucamonga, is 0-for-11 with five strikeouts.
When Kemp is activated, there will be a logjam in the Dodgers' outfield with Yasiel Puig, Carl Crawford and Andre Ethier filling in while Kemp has been injured.
The Dodgers acquired veteran infielder Michael Young from the Philadelphia Phillies on Saturday. In exchange for Young, the Dodgers sent minor league pitcher Rob Rasmussen to the Phillies.
Young, 36, will likely come off the bench to play first and third base. In 463 at-bats this year, Young is batting .272 with eight home runs and 41 RBIs.
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The Atlanta Braves promoted right-handed pitcher Freddy Garcia.
Manager Fredi Gonzalez said Garcia will be used mainly out of the bullpen, although he could make a spot start down the stretch.
Atlanta acquired Garcia via a waiver trade with the Baltimore Orioles on Aug. 23. In 11 games with Baltimore, he compiled a 3-5 mark with 5.77 ERA.
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The Cleveland Indians sent minor league pitcher Matt Langwell to the Arizona Diamondbacks to complete the Jason Kubel trade.
The Indians acquired Kubel from the Diamondbacks on Friday for a player to be named later.