When will my son reach puberty? The order, the timing and the awkward parts

Big Kids & Teens · theAsianparent · Updated 15 August 2026

Boys start puberty about two years after girls and finish later, which is why a Class 7 classroom looks the way it does. Here is the order, and what to tell him before it starts.

The order it happens in

First: the testes grow, usually between about 9 and 14 years. It is not visible to a parent, which is why boys' puberty often seems to start suddenly when it has actually been under way for a year.

Then: pubic hair, growth of the penis, body odour, and the start of the growth spurt. Erections become more frequent, and night-time ejaculations (wet dreams) begin — typically around 12 to 14.

Then: the growth spurt peaks — boys can grow 8 to 10 centimetres in a year — the voice deepens and cracks, shoulders broaden, muscle mass increases, and acne appears.

Last: facial hair, a fully settled deeper voice, and the final centimetres of height. Boys often keep growing into their late teens, several years after girls have finished.

The parts he needs warning about

Wet dreams: tell him before they happen, around 10 or 11, in one matter-of-fact sentence — this is normal, it happens to everyone, nothing is wrong, and here is how to change the sheets without anyone making a fuss. Unexplained, they cause real shame.

Erections at inconvenient times: common, involuntary, and embarrassing at school. Knowing in advance that it happens to every boy removes most of the distress.

Voice cracking: temporary, funny to everyone except him, and worth defending him from teasing about — including from adults, who tend to find it hilarious.

Breast tissue: a temporary swelling under one or both nipples affects a substantial minority of boys in mid-puberty and usually settles within a year or two. It causes real anxiety and is worth naming as normal — while getting it checked if it is large, painful or persistent.

The things worth handling well

Body odour arrives suddenly and needs a daily shower, clean clothes and, from around ten to twelve, deodorant. Handle it privately rather than as a family joke.

Acne is not caused by chocolate or by 'dirty' skin. A gentle cleanser twice a day, no scrubbing, no picking, and a doctor for anything that is scarring or distressing — acne treatment works, and untreated acne in adolescence leaves both scars and a real mental-health cost.

Appetite and sleep both go up. A boy in a growth spurt eating enormously and sleeping until noon is doing exactly what his body requires; teenagers genuinely need eight to ten hours and their body clock shifts later.

Talk about consent and respect at the same age you talk about bodies. Sons need that conversation as much as daughters need safety advice — and in most Indian households it is the one that gets skipped.

When to see a doctor

See a doctor if: no testicular growth by age 14, or puberty starts and then makes no progress over two years; signs of puberty before age 9, which needs assessment; a testis that has never descended; or a much smaller height than peers with no signs of puberty.

Same-day, urgently: sudden severe testicular pain, with or without swelling and vomiting — testicular torsion is an emergency and a delay costs the testis. Also a painful, hot, swollen scrotum with fever.

Also see a doctor for: breast tissue that is large, painful or lasting more than two years; severe acne; or significant distress about body changes, gender identity or sexuality, all of which deserve a supportive, non-judgemental conversation.

This article is general information, not medical advice, and is no substitute for personal medical advice. For any decision about your or your child's health, please consult your doctor.

Frequently asked questions

Q: My son is 14 and much shorter than his friends. — Boys' timing varies by years rather than months, and late developers usually catch up and often keep growing after everyone else has stopped. If there are no signs of puberty at all by 14, get it checked; if puberty has begun, patience is usually the right answer.

Q: How tall will he be? — Genetics decides most of it — the average of the parents' heights, adjusted for sex, is a rough guide. Sleep, nutrition and treating any chronic illness matter; supplements and 'height increase' products do not.

Q: Should his father have this conversation? — Ideally whichever parent will actually do it, calmly and in stages. Boys with only one available parent manage fine. What matters is that it happens before the changes, not after.

Q: He has become moody and shuts his door constantly. — Normal, and largely hormonal plus a developmental need for privacy. Keep the door open in a different sense: eat together, drive him places, be available late at night when teenagers talk. Watch for the difference between moodiness and depression — our teen mental health guide covers it.

TeensPubertyHealth

Reviewed by

Nakul Phatak — CEO, theAsianparent India & Indonesia
Head of theAsianparent India; father of one
Roshni Chugani — Head of Marketing, theAsianparent India & Singapore
12 years in the mother-and-baby space; mother of two

Published by: theAsianparent editorial team