According to the NYPost, the foursome was seen wearing life-vests as they navigated the waters.
Vonn, who had been in a cast since she tore her ligaments in Australia in February, appeared to have healed entirely as she jet skied cast-free.
For photos of the couple's Memorial Day celebrations visit the NYPost.
Tiger Woods and Lindsey Vonn spent Memorial Day weekend jet skiing in Jupiter, Fla., with Woods' children Sam, 6, and Charlie, 4.
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