Studies have suggested that cognitive processes such as working memory and temporal control contribute to motor sequence learning (cf. Ashe et al., 2006). These processes engage overlapping brain regions with sequence learning, but concrete evidence has been lacking. In the current study, we determined whether limits in visuospatial working memory capacity and temporal control abilities affect the temporal organization of explicitly acquired motor sequences. Participants performed an explicit sequence learning task, a visuospatial working memory task and a continuous tapping timing task. We found that visuospatial working memory capacity, but not the coefficient of variation from the timing task, correlated with the rate of motor sequence learning and the chunking pattern observed in the learned sequence. These results demonstrate that individual differences in short-term visuospatial working memory capacity, but not temporal control, predict the temporal structure of explicitly acquired motor sequences.