Wake Windows by Age: How Long Babies Stay Awake Between Naps

What is a wake window?

A wake window is the time your baby spends awake between sleeps. It starts when they wake up and ends when you put them down again, so feeds, diaper changes and play all happen inside it. Tresillian's figures count feeding time as awake time.

Wake windows get longer as babies grow. Knowing the usual range for your baby's age tells you roughly when to start watching for tired signs, so you can put them down sleepy but not yet overtired.

How long should a baby be awake at each age?

Two publishers give typical awake times between sleeps across the whole first year: Cleveland Clinic, a US academic medical center, and Tresillian, an Australian early-parenting service. Where Tresillian uses its own age band, that band is in parentheses.

Age	Cleveland Clinic (US)	Tresillian (Australia)
Birth to 1 month	30 min to 1 h	1 to 2 h (to 6 weeks)
1 to 3 months	1 to 2 h	1 to 2 h 30 min (6 to 12 weeks)
3 to 4 months	1 h 15 min to 2 h 30 min	1 h 30 min to 2 h (3 months)
5 to 7 months	2 to 4 h	2 to 3 h (5 months; 6 to 8 months)
7 to 10 months	2 h 30 min to 4 h 30 min	2 to 3 h (6 to 8 months); 2 h 30 min to 3 h 30 min (9 to 10 months)
10 to 12 months	3 to 6 h	3 to 4 h (11 to 12 months)

A third, the Health Service Executive (HSE), Ireland's public health service, gives about 1 to 2 hours between naps up to 3 months, and about 2 to 2 hours 30 minutes from 3 to 6 months.

The biggest gaps are at either end. In the first month, Cleveland Clinic's range is shorter than the other two. From about 5 months, the ranges all start at nearly the same point, but Cleveland Clinic's upper limits run well past the rest: up to 6 hours at 10 to 12 months, against 4 hours in Tresillian's guide at 11 to 12 months. In between, they broadly overlap.

The HSE stops giving awake times after 6 months, and none of the three gives any past the first birthday. From there, their guidance is about the number of naps, covered below.

Newborns

In the first weeks, a newborn may barely get through a feed and a diaper change before falling asleep again. Newborns can't yet tell day from night. Tresillian notes they aren't developmentally ready to learn routines, and that hands-on help to settle them won't spoil them. In these early weeks, follow feeds and sleepy cues rather than a chart.

Are wake windows official guidance?

No. The two main guidelines on how much young children should sleep are a 2019 guideline from the World Health Organization (WHO) and a 2016 consensus from the American Academy of Sleep Medicine (AASM), which the American Academy of Pediatrics endorsed. Both set total sleep per 24 hours, naps included. Neither says how long a baby should stay awake between sleeps. The closest WHO comes is advising regular sleep and wake-up times for 1- and 2-year-olds.

They also differ on newborns. WHO recommends 14 to 17 hours a day up to 3 months. The AASM gives no figure under 4 months, because normal sleep varies so widely at that age and there isn't enough evidence linking specific amounts to health.

The charts above come from a Cleveland Clinic pediatrician, a parenting service and a national health service. Tresillian calls its own schedule "a guide only." Treat the numbers as a rule of thumb, not a target your baby has to hit.

How many naps does a baby need?

Naps drop as awake time grows. Here is Tresillian's nap guide next to the WHO and AASM totals.

Age	Daytime naps (Tresillian)	Total sleep in 24 hours, naps included
0 to 3 months	6 to 8 sleeps around the clock at first; 3 to 4 naps by 6 to 12 weeks	14 to 17 h (WHO); no AASM figure
4 to 11 months	2 to 3 at 3 to 5 months; 2 by 7 to 8 months	12 to 16 h (WHO and AASM)
1 to 2 years	2 at 12 months; often 1 closer to 14 months	11 to 14 h (WHO and AASM)

Daytime sleep shrinks in total, too: Tresillian gives 3 to 4 hours across the day at 3 to 5 months and 2 to 3 hours by 7 to 8 months. Some babies take long naps and others only need short ones.

From about 9 months, a baby who tires later in the afternoon may need a short third nap. Ireland's HSE puts the move to a single midday nap at 12 to 15 months. Sleep need also varies from child to child; the AASM links that to genetic, behavioral, medical and environmental factors.

How do you use wake windows without watching the clock?

Watch your baby first and the clock second. Tresillian's advice is to be led by your baby's cues and tired signs. Common ones include:

• Yawning
• Rubbing their eyes, face or ears
• Blinking more, dull eyes or heavy eyelids
• Staring off, going quiet or seeming less alert
• Sucking or putting their hands to their mouth
• Frowning, fussing or restlessness

Respond early if you can. Sleepiness can turn into overtiredness quickly, and an overtired baby is harder to put down, not easier: Cleveland Clinic explains that a too-tired baby gets a rush of cortisol and adrenaline that winds them up instead of calming them. Its advice is to put your baby down as soon as you notice drowsy signs like eye rubbing and droopy eyelids.

Once you know your baby's signs, Cleveland Clinic suggests noting when they usually show up. If your 4-month-old tends to look sleepy about two hours in, laying them down five minutes before that point catches them sleepy but not exhausted. Tresillian also suggests considering how long ago your baby last fed and slept.

Expect some variation. Some babies fall into a regular pattern on their own; for others, a ballpark is the best guide. Awake times can differ from one day to the next, even from one nap to the next, and illness or a busy day can throw them off. Tresillian's reassuring check: if your baby is happy and interactive while awake, they're likely getting enough sleep.

When should you talk to a doctor about sleep?

Contact your pediatrician or family doctor if:

• Your baby snores often, or seems to struggle to breathe while asleep
• They're hard to wake, or seem to be sleeping much more than usual
• They seem uninterested in feeding
• They're extremely fussy and nothing soothes them
• Anything about their sleep worries you. No question is too small.

Short pauses in breathing followed by rapid catch-up breathing, called periodic breathing, are generally normal in young babies, who usually outgrow them by 6 months. Call your local emergency number right away if your baby's skin turns pale, bluish or grayish.