Welch learned clarinet in his childhood, switching to guitar in his early teens. His interests were jazz, rhythm and blues, and rock music. He was accepted into Georgetown University, but instead moved to Paris, planning to attend the Sorbonne. Welch told "People" in a 1979 interview that, in Paris, "I mostly smoked hash with bearded guys five years older" and spent most of his time "sitting in the Deux Magots café". He returned to Southern California, where he briefly studied French at the University of California, Los Angeles but did not complete a degree.