In human adults, visual dominance emerges in several multisensory tasks. In children, auditory dominance has been reported up to 4 years of age. To establish when sensory dominance changes during development, 41 children (6–7, 9–10, and 11–12 years) were tested on the Colavita task (Experiment 1) and 32 children (6–7, 9–10, and 11–12 years) were tested on the sound-induced flash illusion (Experiment 2). In both experiments, an auditory dominance emerged in 6- to 7-year-old children compared to older children. Adult-like visual dominance started to emerge from 9 to 10 years of age, and consolidated in 11- to 12-year-old children. These findings show that auditory dominance persists up to 6 years, but switches to visual dominance during the first school years.