this is so variable it would require an individual evaluation. an special x-ray can show growth plates and determine if they have closed or are closing -- this will give you an estimatel. better yet seeing a pediatric endocrinologist would take the evaluation to a higher level. thirteen year olds may still have plenty of growth but it will take a hands-on examination review of several years of his growth charts and perhaps an x-ray/labs.
when will boys stop growing after puberty? our son is 13 and has armpit and pubic hair. no facial hair. voice changed. our son is 5'4. 5" at 13. i am 5'9. 5" and my wife is 5'2. 5". our son has hairy legs below the knee pubic hair and armpit hair. his voice has changed and he has developed more muscles. we believe that he is nearing the end of puberty. is there any growth left during this stage?