When Do Babies Clap and Wave

The ages, and why they differ

The CDC's revised checklist places "waves 'bye-bye'" at twelve months and "claps when excited" at fifteen months. Those ages come from the 2022 revision, produced by an American Academy of Pediatrics expert group and published in Pediatrics, which set every item at the age by which "most (≥75%) children would be expected to demonstrate the milestone".

The HSE describes them appearing earlier. At nine months a baby will "copy actions such as a wave and use it at different times of the day – not just when they're saying hello or goodbye". At ten months a baby may "use some gestures to communicate, such as clapping and waving", and will "respond to positive recognition such as clapping".

ASHA puts both in the ten to twelve month band, listing that babies "point, wave, and show or give objects" and "imitate and initiate gestures for engaging in social interactions and playing games, like blowing kisses or playing peek-a-boo".

None of these contradict each other. The HSE and ASHA describe when the gestures typically show up; the CDC ages are the points by which most babies are doing them reliably enough to report.

Clapping is harder than it looks

The NHS makes this point on its Baby Moves page, and it is worth quoting because it explains why clapping lags behind waving: "Clapping is actually a pretty big milestone once they can do it themselves. It requires a fair amount of muscle control, fine motor skills and hand-eye coordination."

Bringing both hands to the midline, aiming them at each other, and timing the contact is genuinely more demanding than moving one arm. It is also why clapping usually appears shortly after the other two-handed milestones: the CDC checklist lists "bangs 2 things together" at nine months and "moves things from 1 hand to her other hand" at nine months, both of which are the same coordination in a different costume.

Copying comes before meaning

The first waves are imitation. A baby waves because you waved, at the moment you waved, and often at nobody in particular. The HSE captures this exactly at nine months: a baby will "copy actions such as a wave and use it at different times of the day — not just when they're saying hello or goodbye". Meaning attaches later, when the wave starts arriving at the right moment without a model.

The AAP describes the same progression across the eight to twelve month band: a baby "will begin to communicate what she wants by pointing, crawling, or gesturing toward her target" and "will also imitate many of the gestures she sees adults make as they talk", calling this "a temporary measure... while she learns how to phrase her messages in words".

Why gestures matter as much as words

Gestures are the bridge between understanding and speaking. A twelve-month-old with no words but a full set of gestures — waving, clapping, arms up to be lifted, handing things over, pointing at what they want — is communicating fluently and is usually squarely inside the normal range. The CDC checklist lists "lifts arms up to be picked up" at nine months for exactly this reason: it is a request made without speech.

That is also why the absence of gestures carries more weight than the absence of words at this age. A baby with neither is a different picture from a baby with one.

What helps

Doing it back, and doing it in real situations. The HSE's communication advice for nought to twelve months is to get face to face at about arm's length, "copy their sounds and actions", and "leave little pauses for them to take their turn". The NHS's Baby Moves page suggests taking "turns clapping your hands and their hands together". ASHA suggests teaching a baby to copy actions "like peek-a-boo, clapping, blowing kisses, and waving bye-bye", because "this teaches them how to take turns and use gestures".

Songs with actions do the work almost by themselves. The NHS recommends nursery rhymes with actions — "Pat-a-cake", "Row, row, row your boat", "Wind the bobbin up" — and notes that "doing the actions helps your child to remember the words".

If your baby was born early

Use corrected age. A baby born two months early is at ten months corrected on their first birthday, and the twelve-month waving item is not yet due for them. The AAP advises using adjusted age until two years, adding that by then most children born preterm have caught up.

When to raise it

Gestures on their own do not have a referral age in the guidance we checked, and no health body says that a baby who does not clap needs assessment. What matters is the whole communication package: name response, babbling with a variety of sounds, understanding familiar words, eye contact, and gestures of any kind.

The NHS lists using "fewer facial expressions and gestures" among signs of autism in young children, alongside not responding to their name and using eye contact less often, while being clear that "many autistic people will not show all the signs". A twelve-month-old with no gestures at all, no name response and no babbling is a pattern worth an appointment.

The HSE's general instruction covers the rest: contact a GP or public health nurse if you are concerned about your child's development, if you are worried about a delay, or — the trigger that beats every age here — if your child loses skills they had before. A baby who was waving and has stopped should be reported rather than watched.