Early cochlear implantation led to significant improvements in the speech of deaf children, yet, reduced accuracy and greater token-to-token variability are noted. Vowel spaces are either normal or reduced and vowels are produced with less consistency (e.g., Baudonck et al. 2011; Neumeyer et al. 2010). So far, studies investigated speech in quiet. In the real world, children with cochlear implants (CI) function in noisy environments with auditory feedback containing speech and noise which is known to alter speech production even in typically developing adults (e.g., Bottalico et al., 2015). Since children with CI produce less robust vowels, this study aimed to examine the effects of everyday noise on their productions. Eight children with CI, 6;10–12;0 years old, produced words with Greek vowels while listening to auditory stimuli provided directly via auxiliary input port to the speech processor. The conditions were: a) quiet, b) speech-shaped noise, and c) speech-shaped noise with reverberation. Acoustic measurements of F1 and F2, pitch, duration and intensity were made. Apart from inter-subject variability, results indicated changes in pitch, F1, and intensity with added noise along with occasional changes in duration and F2. Individual analysis focused on age and vowel space changes as the acoustic conditions changed.