Wake Windows by Age: A Month-by-Month Chart

A wake window is the time your baby is awake between sleeps. Most newborns manage only 45 to 60 minutes. By six months that stretches to roughly 2 to 2.5 hours, by twelve months to 3 to 4 hours, and by two years to six hours or more. Overtiredness, not undertiredness, is the more common cause of a short nap.

Last updated: 1 August 2026 · Written by Atikur Rahman

What is a wake window, exactly?

It is the period from the moment your baby wakes to the moment they fall asleep again. It includes the feed, the nappy change, the play, and the wind-down. Parents often measure only the happy part and wonder why the numbers never match the chart. The clock starts at eyes open, not at the end of breakfast.

Wake windows by age: the full chart

Age Wake window Naps per day What is usually going on
0–6 weeks 45–60 min 4–6 Sleep is unstructured. Do not expect a pattern yet.
2 months 60–90 min 4–5 First hints of rhythm, still highly variable.
3 months 75–105 min 4–5 Naps start to consolidate a little.
4 months 90 min–2 hr 3–4 Sleep cycles mature. This is the regression window.
5 months 2–2.25 hr 3–4 Third nap becomes unreliable.
6 months 2–2.5 hr 3 Many babies begin the 3-to-2 nap transition.
7–8 months 2.5–3 hr 2–3 Third nap usually drops in this window.
9–10 months 2.5–3.5 hr 2 Two solid naps, more predictable days.
11–12 months 3–4 hr 2 Morning nap starts to shorten.
13–18 months 4–6 hr 1–2 The 2-to-1 nap transition, often bumpy.
18–24 months 5–6 hr 1 One long midday nap.
2–3 years 6+ hr 1 Nap may start affecting bedtime.

Treat these as ranges, not targets. A baby at the short end of the range is not behind, and a baby at the long end is not advanced.

How much total sleep should they be getting?

Wake windows only matter in service of total sleep. The American Academy of Sleep Medicine, endorsed by the AAP, sets these ranges per 24 hours including naps:

Age Total sleep per 24 hours
4 to 12 months 12 to 16 hours
1 to 2 years 11 to 14 hours
3 to 5 years 10 to 13 hours

If total sleep sits in range and your baby wakes in a reasonable mood, the wake windows are working — whatever the chart says.

How long should a 6-month-old be awake between naps?

Most six-month-olds manage 2 to 2.5 hours awake between sleeps, and take three naps a day. Many are also in the middle of dropping to two naps, which is why six months so often feels like the month everything stopped working.

Why does my baby fight naps when I follow the chart?

Usually one of four reasons. The window was measured from the wrong starting point. The baby is at the edge of a transition and the old schedule no longer fits. The wind-down is too short for an overstimulated baby. Or the first window of the day was too long, and every nap after it inherited the problem.

The first wake window of the day is the shortest one and the one most worth getting right. If the morning nap goes badly, the rest of the day usually follows.

Wake windows or sleepy cues: which should I follow?

Both, in that order. Use the wake window to know roughly when to start watching, then use your baby's cues to decide the exact moment. Charts cannot see your baby; you can.

Reliable early cues are a fixed stare, reduced babbling, ear pulling, and slowing movement. By the time you see arched back, rubbing eyes hard, or crying, you are usually past the ideal window and dealing with a cortisol spike that makes falling asleep harder, not easier.

What are the signs a baby is ready to drop a nap?

  • Consistently fighting one specific nap for two weeks or more, not just a bad few days
  • Taking a long time to fall asleep at bedtime when they previously went down easily
  • Waking early in the morning and not resettling
  • Happily skipping a nap without falling apart by late afternoon

Two weeks is the threshold worth waiting for. A single disrupted week is far more often teething, illness, or a developmental leap than a genuine transition — see the sleep regression ages chart for what else lands at each age.

Frequently asked questions

Is contact napping a bad habit?

No. Contact naps are developmentally normal and do not prevent a baby from learning to sleep independently later. They can become difficult if they are your only option and you need one that does not require you. That is a practical constraint, not a behavioural problem you have created.

Should I wake a baby from a nap to protect the schedule?

Sometimes, yes. Capping a late-afternoon nap is often what protects bedtime. Waking a baby from the first nap of the day is rarely worth it.

What if my baby's wake windows do not match the chart at all?

Some babies genuinely sit outside the ranges. What matters more is total sleep in 24 hours, mood on waking, and whether they settle without a long fight. If all three look reasonable, the chart is wrong for your baby, not the other way round.

Do wake windows matter at night?

Not in the same way. Night wakings are about sleep pressure, hunger and sleep associations rather than wake windows. The exception is a long final stretch before bed, which for many babies is the longest window of the day by design.

Where to go from here

If you want the full month-by-month version with cue charts and a plan for rescuing a broken nap day, that is our Baby Sleep Guide: Wake Windows & Nap Timing. If you are in the middle of dropping a nap, the Nap Transition Guide covers that specifically. You can browse everything in baby sleep guides.

Free printables: the wake windows chart and the sleep regression chart.

Sources

This article is educational and is not a substitute for advice from your paediatrician or health visitor. Follow current safe sleep guidance from the American Academy of Pediatrics: babies should sleep on their back, on a firm flat surface, in their own clear sleep space. If you have concerns about your baby's breathing, feeding or growth, speak to a clinician.

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