If you are staring at the clock wondering whether your baby has been awake too long or not long enough, you are in good company. One app says two hours, another says three, and your baby is rubbing their eyes at ninety minutes. This guide gives you the wake window for every age from newborn to 18 months, shows where the published ranges agree, and says plainly where they do not.
A wake window is the stretch your baby is awake between sleeps. The 5 month old wake window gets the closest look here because it is the age parents search for most, but every month has its own section, and the short answer is just below. If sound is part of your nap routine, our pink noise for babies safety guide covers the limits that matter before you use any.
The short answer
Published guides put a 5 month old wake window anywhere from 1.5 to 4.5 hours, yet every range they list includes 2 to 2.25 hours. Medical guidelines set total sleep, not exact wake-window minutes, so treat that stretch as a starting point and let your baby's sleepy cues lead.
Also available on Apple Music, Tidal, Amazon Music and YouTube Music — search Linden Tea
Wake Windows by Month: The Chart From Newborn to 18 Months
Here is every age on one picture. Each bar is the stretch that every source we checked includes for that age. Where a bar is short, the guides disagree the most, and at 5 months it is only a quarter of an hour wide.
The numbers behind the chart are below. Each column is one source, and each cell shows the range exactly as that source prints it, with its own age band in brackets when the band covers more than one month.
| Age | Cleveland Clinic | Sleep Foundation | Snugglebaby | The Bump |
|---|---|---|---|---|
| Newborn | 0.5–1 h (birth to 1 mo) | 0.5–1.5 h (0 to 1 mo) | 45 min–1 h | 30 min–1 h |
| 1 month | 0.5–1 h (birth to 1 mo); 1–2 h (1 to 3 mo) | 0.5–1.5 h (0 to 1 mo); 1–3 h (1 to 4 mo) | 1–1.25 h | — |
| 2 months | 1–2 h (1 to 3 mo) | 1–3 h (1 to 4 mo) | 1–1.5 h | 1–1.5 h |
| 3 months | 1–2 h (1 to 3 mo); 1.25–2.5 h (3 to 4 mo) | 1–3 h (1 to 4 mo) | 1.25–1.75 h | 1.25–2 h |
| 4 months | 1.25–2.5 h (3 to 4 mo) | 1–3 h (1 to 4 mo) | 1.5–2.25 h (4 to 5 mo) | 1.5–2.5 h (4 to 5 mo) |
| 5 months | 2–4 h (5 to 7 mo) | 1.5–4.5 h (5 to 7 mo) | 1.5–2.25 h (4 to 5 mo) | 1.5–2.5 h (4 to 5 mo) |
| 6 months | 2–4 h (5 to 7 mo) | 1.5–4.5 h (5 to 7 mo) | 2–3 h (6 to 7 mo) | 2–3 h (6 to 8 mo) |
| 7 months | 2–4 h (5 to 7 mo); 2.5–4.5 h (7 to 10 mo) | 1.5–4.5 h (5 to 7 mo); 1.5–6 h (7 to 10 mo) | 2–3 h (6 to 7 mo) | 2–3 h (6 to 8 mo) |
| 8 months | 2.5–4.5 h (7 to 10 mo) | 1.5–6 h (7 to 10 mo) | 2.5–3.5 h (8 to 10 mo) | 2–3 h (6 to 8 mo) |
| 9 months | 2.5–4.5 h (7 to 10 mo) | 1.5–6 h (7 to 10 mo) | 2.5–3.5 h (8 to 10 mo) | 2.5–4 h (9 to 12 mo) |
| 10 months | 2.5–4.5 h (7 to 10 mo); 3–6 h (10 to 12 mo) | 1.5–6 h (7 to 10 mo); 3–7.5 h (10 to 12 mo) | 2.5–3.5 h (8 to 10 mo) | 2.5–4 h (9 to 12 mo) |
| 11 months | 3–6 h (10 to 12 mo) | 3–7.5 h (10 to 12 mo) | 3–4 h (11 to 12 mo) | 2.5–4 h (9 to 12 mo) |
| 12 months | 3–6 h (10 to 12 mo) | 3–7.5 h (10 to 12 mo) | 3–4 h (11 to 12 mo) | 2.5–4 h (9 to 12 mo) |
| 13 to 18 months | — | — | 3.5–4.5 h (13 to 17 mo); 4–5.5 h (18 to 23 mo) | — |
How we read the sources: when a source's band covers an age, we use that band, and where two bands from the same source meet at an age, we use the span of both. We never average sources and never fill in a month a source does not publish. Cleveland Clinic's page is dated April 25, 2024, The Bump's May 14, 2026 and Snugglebaby's August 10, 2026. Sleep Foundation's page was checked in October 2026.
Before you pick your baby's row, it helps to know exactly what the clock is counting.
What Counts as a Wake Window
Cleveland Clinic defines wake windows as the time babies are awake between naps. In practice that is everything from the moment your baby wakes until you start the routine that leads to the next sleep.
That includes feeding. The Bump states it directly: wake windows include feeding and other activities such as tummy time. So a 30-minute feed inside a 2-hour window leaves about 90 minutes for diaper changes, play and winding down. Not every page says how it counts, which is one more reason numbers from different charts do not line up.
One more thing a wake window is not: a schedule. It is a range to plan around, and the next section explains why even the ranges disagree.
Why Every Wake Window Chart Gives a Different Number
Look at the 5 month row in the table. Cleveland Clinic prints 2 to 4 hours, Sleep Foundation 1.5 to 4.5, and Snugglebaby 1.5 to 2.25. Same baby, three answers. There are three reasons.
First, the age bands differ. Cleveland Clinic and Sleep Foundation lump 5 to 7 months together, while The Bump and Snugglebaby use 4 to 5 months. A wide band always produces a wide range.
Second, we could not find a clinical standard behind any of these tables. They are conventions published by parenting and health sites.
Third, medical bodies measure something else. The American Academy of Sleep Medicine consensus statement recommends 12 to 16 hours of sleep per 24 hours for babies 4 to 12 months old, naps included. It makes no recommendation for babies under 4 months, because normal variation is too wide. Total sleep is a medical benchmark. Wake windows are a practical tool, so treat them that way.
With that in mind, here is each age in order, starting with the youngest babies.
3 Month Old Wake Windows: Newborn Through 3 Months
Wake windows are shortest in the first three months, and the published ranges barely move from one week to the next. Use the bar as your anchor and your baby's cues as the final word.
Newborn Wake Window
All four sources overlap on 45 minutes to 1 hour for a newborn, inside a wider published span of 30 minutes to 1.5 hours. Cleveland Clinic and The Bump both print 30 minutes to 1 hour. In practice that is a feed, a diaper change and a few minutes of looking around before sleepy cues appear.
1 Month Old Wake Window
Only Snugglebaby prints a number for exactly 1 month: 1 to 1.25 hours. Cleveland Clinic and Sleep Foundation fold a 1 month old into bands that run from 30 minutes up to 2 or 3 hours. The one stretch all three include is 1 to 1.25 hours, which makes it the cautious place to start.
2 Month Old Wake Window
Four sources publish something for 2 months, and all four include 1 to 1.5 hours. The Bump and Snugglebaby both print exactly that, while Cleveland Clinic and Sleep Foundation print 1 to 2 and 1 to 3 hours for their wider bands.
3 Month Old Wake Window
The 3 month old wake window is where the guides tighten up. The Bump lists 1.25 to 2 hours and Snugglebaby 1.25 to 1.75, and every source includes 1.25 to 1.75 hours. If you were searching for 3 month old wake windows or wake windows for 3 month old babies, that is the number to carry into the day. Searching for the singular, a 3 month old wake window, gives the same answer.
Many parents count in weeks at this stage, and the guides do not, so the next section bridges the gap.
7 Week Old Wake Window and 8 Week Old Wake Window
We found no source that prints a 7 week old wake window of its own. A 7 week old falls between the 1 month and 2 month rows, where Snugglebaby prints 1 to 1.25 hours and then 1 to 1.5 hours. The 8 week old wake window matches the 2 month row: 1 to 1.5 hours at both Snugglebaby and The Bump. We have not interpolated anything here, only shown which rows the week falls between.
The same rows cover the weeks around them. A 5 week old wake window, a 6 week old wake window, a 9 week old wake window, a 10 week old wake window and a 12 week old wake window all sit inside the 1 to 3 month bands, and 7 week old wake windows follow the same logic as any other week in that range. Weeks 1 to 4 sit in the newborn row.
Once your baby passes the three-month mark, the ranges start to climb.
4 Month Old Wake Window and 5 Month Old Wake Window
4 Month Old Wake Window
The 4 month old wake window is the first one with a clear overlap across four sources: 1.5 to 2.25 hours. The Bump prints 1.5 to 2.5 hours for 4 to 5 months, Snugglebaby 1.5 to 2.25, Cleveland Clinic 1.25 to 2.5 for 3 to 4 months, and Sleep Foundation 1 to 3 for 1 to 4 months.
If you are comparing wake windows for 4 month old babies across apps, expect the wake window for 4 month old babies to vary by up to half an hour between charts. Four months is also the age where the AASM total-sleep recommendation begins.
5 Month Old Wake Window
The 5 month old wake window is the most searched number in this article and the most contested. Betteroo, the only source that prints a 5 month figure of its own, says most babies at five months can stay awake about 2 to 2.75 hours. Its breakdown is 2 to 2.25 hours for the first window of the day, 2.25 to 2.5 for the middle one and 2.5 to 2.75 for the last.
The tables tell a wider story. The Bump and Snugglebaby (4 to 5 months) print 1.5 to 2.5 and 1.5 to 2.25 hours. Cleveland Clinic and Sleep Foundation (5 to 7 months) print 2 to 4 and 1.5 to 4.5. Put them all together and the full span is 1.5 to 4.5 hours, but every range includes 2 to 2.25 hours.
That is the safest place to begin. The wake window for 5 month old babies is a starting range, not a rule, so 5 month old wake windows are best tested over a few days. If you see sleepy cues at 90 minutes, follow the cues, not the chart. Some parents write it 5 month wake windows or 5 mo old wake window, but the numbers are the same.
If sound is part of your naps, here is a second album from Linden Tea, professionally produced for sleep. Read the sound and safe sleep section at the end of this guide before you press play.
Next, the age where the guides finally agree.
6 Month Old Wake Window
6 Month Old Wake Window: Where the Guides Agree
The 6 month old wake window is the tightest overlap in the chart: 2 to 3 hours. The Bump (6 to 8 months) and Snugglebaby (6 to 7 months) both print exactly 2 to 3 hours, while Cleveland Clinic (2 to 4) and Sleep Foundation (1.5 to 4.5) print wider bands that contain it.
If you are looking at wake windows for 6 month old babies, a 6 mo old wake window of 2 to 3 hours is a solid starting range. It also fits the bigger picture: the AASM recommends 12 to 16 hours of total sleep per 24 hours at this age, naps included, so wake time and sleep time have to add up across the whole day.
Seven and eight months share a band in most charts, so they share a section.
7 Month Old Wake Window and 8 Month Old Wake Windows
7 Month Old Wake Window
A 7 month old sits at the boundary between bands, which is why 7 month old wake windows look so inconsistent online. Cleveland Clinic prints 2 to 4 hours (5 to 7 months) and 2.5 to 4.5 (7 to 10 months). Sleep Foundation prints 1.5 to 4.5 and 1.5 to 6. Snugglebaby and The Bump both print 2 to 3 hours.
The stretch all four include is 2 to 3 hours. If you searched for 7 month wake windows, the wake window for 7 month old babies or wake windows for 7 month old babies, that is your answer, and the 7 month old wake window is best treated as the 6 month range with a little room to grow.
8 Month Old Wake Windows
The 8 month old wake windows narrow to 2.5 to 3 hours where all four sources overlap. Snugglebaby prints 2.5 to 3.5 for 8 to 10 months, The Bump prints 2 to 3 for 6 to 8 months, and Cleveland Clinic prints 2.5 to 4.5 for 7 to 10 months. Sleep Foundation's 1.5 to 6 hours is the widest of the four.
Whether you call it 8 month wake windows, a wake window for 8 month old babies, wake windows for 8 month old babies or an 8 mo old wake window, the answer is the same range, and your baby's cues decide where inside it you land.
After eight months, the charts start to stretch fast.
9 Month Old Wake Windows Through 12 Months
9 Month Old Wake Window
Every source includes 2.5 to 3.5 hours for 9 month old wake windows. Snugglebaby prints 2.5 to 3.5 for 8 to 10 months, The Bump 2.5 to 4 for 9 to 12 months, and Cleveland Clinic 2.5 to 4.5 for 7 to 10 months. A 9 month old wake window that lands near 3 hours is well inside every range.
10 Month Old Wake Windows
The overlap for 10 month old wake windows is the same 2.5 to 3.5 hours, but the published span is the widest in the whole chart: Sleep Foundation prints 3 to 7.5 hours for 10 to 12 months. A range that wide is not a recommendation, it is a warning that babies this age vary a great deal.
11 Month Old Wake Window
At 11 months the sources converge again on 3 to 4 hours. Snugglebaby prints 3 to 4 for 11 to 12 months, The Bump 2.5 to 4 for 9 to 12 months, and Cleveland Clinic and Sleep Foundation print 3 to 6 and 3 to 7.5 for 10 to 12 months.
12 Month Old Wake Window
The 12 month old wake window uses the same bands, so the overlap stays at 3 to 4 hours. Past this point the evidence thins out, and that is where the chart gets honest about what it does not know.
13 Month Old Wake Windows Through 18 Months
After the first birthday the evidence thins out. Cleveland Clinic and Sleep Foundation stop at 12 months, and of the pages we could open only Snugglebaby prints numbers for older babies: 3.5 to 4.5 hours for 13 to 17 months and 4 to 5.5 hours for 18 to 23 months. So for these months the chart shows one source, and we say so rather than dress it up.
13 Month Old Wake Windows
For 13 month old wake windows, the single source we have is Snugglebaby's 3.5 to 4.5 hours. That is a small step up from the 3 to 4 hours of the 11 and 12 month rows, which is a good reminder that the change from month to month is gradual.
14 to 17 Month Old Wake Windows
Snugglebaby groups 13 to 17 months into one band of 3.5 to 4.5 hours, so a 14, 15, 16 or 17 month old shares the same published range. We did not find a trustworthy source that separates these months, and splitting them ourselves would be guessing.
18 Month Old Wake Window
At 18 months Snugglebaby moves to a new band of 4 to 5.5 hours, which runs through 23 months. As with every age in this guide, treat it as a starting point and let your toddler's own rhythm tell you where inside it they land.
Whatever the age, there is a pattern inside the day that makes every window easier to use.
First Window Short, Last Window Long
Wake windows are not the same length all day. Betteroo's 5 month breakdown shows the shape: 2 to 2.25 hours for the first window, 2.25 to 2.5 for the middle one and 2.5 to 2.75 for the last before bed. The day opens with the shortest stretch and ends with the longest.
Do the arithmetic once and it stops feeling mysterious. If your baby wakes at 7:00 am and the first window is about 2 hours, the first sleep starts around 9:00. You do not need a different rule for every window, just a shorter one in the morning and a longer one at the end of the day.
That pattern is a starting point, and the next step is finding your own baby's numbers.
How to Find Your Baby's Real Wake Window
First, start from the bar for your baby's age in the chart. That is the stretch every source includes.
Second, watch for sleepy cues. Common ones include yawning, rubbing eyes, fussing, staring into space and losing interest in toys. When they appear, start the routine, even if the clock says there is time left.
Third, keep a simple log for five to seven days: the time your baby woke, the time sleepy cues showed up, and the time sleep started. Patterns appear fast, and your log is more accurate than any chart because it is about your baby.
Fourth, adjust in small steps, a few minutes at a time, and give each change a few days before judging it.
If you have done all that and the numbers still do not work, the next section covers what usually sits underneath.
When the Wake Window Isn't Working
Sometimes you follow the range, watch the cues, and bedtime is still a fight. That does not mean the chart is wrong or that you are doing it wrong. Wake windows are one input among several, and a baby's sleep also depends on the room, the routine and how settled they feel when it is time to be put down.
If settling is the real problem, a consistent routine matters more than a precise number of minutes. Our guide to white noise for sleep training babies walks through how sound can fit into that routine.
If sleep problems persist, or you notice anything that worries you, talk to your pediatrician. A chart cannot replace someone who knows your baby.
One last piece completes the picture: the room where all of this sleep actually happens.
Sound, Sleep Space and Safe Sleep
A good wake window ends in a safe sleep, and the basics come first. The American Academy of Pediatrics safe sleep guidance and the CDC safe sleep recommendations agree on the essentials: babies sleep on their backs, on a firm, flat surface, with nothing soft in the sleep area, and with the baby's sleep area in the parents' room, ideally for at least the first 6 months.
If you use sound, the AAP sets limits for both distance and volume in its 2023 report. We cover those limits once, in full, in our pink noise for babies safety guide. For the volume thresholds behind them, see the safe volume guide, and for choosing a sound for your baby, the guide to the best sound for baby sleep.
To hear what pink noise sounds like before you decide, here is a pink noise video from The Blackout Room, a channel we feature. Keep the volume low and the speaker well away from the crib.
Wake windows will keep changing as your baby grows, and a good range is simply the one that gets your baby to sleep without a struggle.