Sleep
3 Month Old Sleep Schedule: Wake Windows, Naps and a Sample Day
3 month old sleep schedule: wake windows of 65–125 minutes, about 4 naps, 14–16 hours of sleep and a sample day.
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This article is for general information and is not a substitute for professional medical advice. Always consult your pediatrician or doctor about your child.
Sources: WHO, CDC, AAP and NHS guidance. Recommendations differ between countries — for local advice see the NHS or CDC.
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3 month old sleep at a glance
At 3 months many babies spend more of the day awake and the pattern of wake windows and naps becomes easier to see. Below are the typical ranges, a sample day with clock times and answers to the questions parents ask most. The numbers are typical ranges; your baby's cues come before the clock.
A wake window is the time your baby is awake between two sleeps, including the feed, diaper change and play.
| Age | Wake window | Naps / day | Daytime sleep | Total sleep (24 h) |
|---|---|---|---|---|
| 2–4 months (until the 3 month mark) | 65–125 min (typically 95) | 4–5 | 5–6 h | 14–16 h |
| 2–4 months (from 3 months) | 65–125 min (typically 95) | 4 | 4–5 h | 14–15 h |
The wake window is the same for the whole 2–4 month band; the daytime and total sleep figures shift a little around the 3 month mark, and your baby's cues decide in between. The wake window range is the Whispie app's starting range, as on the wake window chart by age; it is not an official standard.
Free tool: Wake window calculator for a 3-month-old
How much does a 3 month old sleep?
Typically 14–16 hours in 24 hours with 5–6 hours of daytime sleep up to the 3 month mark, and 14–15 hours with 4–5 hours of daytime sleep from 3 months. The rest falls at night.
Outside sources: the WHO gives 14–17 hours of good quality sleep, including naps, for babies aged 0–3 months, and the National Sleep Foundation gives the same range. From 4 months the WHO and the AASM both give 12–16 hours per 24 hours, naps included.
These are ranges, not targets. If your baby is calm and alert when awake, being near either end is usually fine. If you are worried about sleep, weight gain or unusual sleepiness, talk to your pediatrician or GP.
Wake windows at 3 months
The starting range is 65–125 minutes (typically about 95), and the feed and diaper change count as part of it.
| What you see | What you can do |
|---|---|
| Yawning, a staring look or a calmer body early in the window | Aim for the lower end and start winding down. |
| Still cheerful and alert near the end of the range | You can wait until the upper end. |
| Fussing has already started | The window may have been a little long; try starting sooner next time. |
Long wake windows make falling asleep harder, not easier. Use the Wake Window Calculator to adjust for age.
Daytime naps at 3 months
The Whispie app starts from about 4 naps at this age. Because sleep is changing around the 3 month mark, expect the number of naps to vary from day to day and watch the daytime total.
- Naps can be short or long. One short nap does not throw off the day; judge the total in the evening.
- By day, the NHS suggests opening the curtains, playing and not worrying too much about everyday noises while your baby naps.
- Safe sleep applies to every nap: back to sleep on a firm, flat mattress with the cot clear of anything that could cover the face and head (NHS), and room sharing without bed sharing for at least the first 6 months (NHS and AAP). See safe sleep for babies.
Sample day for a 3 month old
This table is only an example based on the 3–4 months row. The times move with when your baby wakes, and your baby's cues decide. The sample day starts at 7:00 am and has 4 naps, inside the 3–4 range.
| Time | What happens | Note |
|---|---|---|
| 7:00 am | Day starts: feed | feed, diaper change, play; about 1 h 30 min awake |
| 8:30 am | Nap 1 | about 1 h 30 min |
| 10:00 am | Awake | about 1 h 45 min awake |
| 11:45 am | Nap 2 | about 1 h 30 min |
| 1:15 pm | Awake | about 1 h 45 min awake |
| 3:00 pm | Nap 3 | about 1 h 15 min |
| 4:15 pm | Awake | about 1 h 30 min awake |
| 5:45 pm | Nap 4 | about 30 min |
| 6:15 pm | Awake | about 1 h 30 min awake |
| 7:45 pm | Night sleep begins | Dim, quiet room; night feeds as needed |
In this example the naps add up to 4 h 45 min, inside the typical 4–5 hours. The wake windows are 90–105 minutes, inside the 65–125 minute range. How long night sleep lasts varies a lot, so we do not give a fixed figure for the night.
What changes around 3 months
Side by side, daytime and total sleep either side of the 3 month mark (the wake window range stays the same):
| Up to 3 months | From 3 months | |
|---|---|---|
| Wake window | 65–125 min (typically 95) | 65–125 min (typically 95) |
| Naps / day | 4 | 4 |
| Daytime sleep | 5–6 h | 4–5 h |
| Total sleep (24 h) | 14–16 h | 14–15 h |
More detail for the weeks before this is on the 12 week old sleep schedule page, and what comes next is on the 4 month old sleep schedule page.
Night sleep at 3 months
The NHS says babies will wake during the night because they need to be fed, and that some babies soon sleep through the night while others do not for a long time. We do not give a number for night waking because there is no evidence-based figure. At night the NHS suggests keeping the lights low and your voice quiet.
Our night wakings guide covers what to expect by age.
Tired signs
Tired signs come before the clock. Our wake window chart suggests watching for early cues such as a staring look, a calmer body and yawning, and the chart's advice is to aim for the lower end of the range if your child is already fussy by the end of a wake window. More on the tired signs page.
Common questions about a 3 month old's sleep
How much sleep does a 3 month old need?
Typically 14–16 hours in 24 hours up to the 3 month mark (5–6 hours of it in daytime naps) and 14–15 hours from 3 months (4–5 hours in daytime naps). The WHO gives 14–17 hours for babies aged 0–3 months, and from 4 months the WHO and the AASM give 12–16 hours, naps included.
How long should wake windows be at 3 months?
The Whispie app starts a 3 month old from a range of 65–125 minutes, with about 95 minutes typical. Within that range let your baby's cues decide: aim for the lower end if they are fussy by the end of the window, the upper end if they are still cheerful.
How many naps does a 3 month old take?
The Whispie app starts from about 4 naps at this age. The count varies from day to day, so look at the daytime total (5–6 hours up to the 3 month mark, then 4–5 hours).
Does a 3 month old sleep through the night?
The NHS says some babies soon sleep through the night while others do not for a long time, and that babies will wake during the night because they need to be fed. There is no evidence-based number for night waking at this age. If you have questions about feeding or weight gain, talk to your pediatrician or GP.
Should a 3 month old follow the same schedule every day?
A loose rhythm is more realistic than a fixed clock schedule: wake windows within the 65–125 minute range, a similar number of naps, and a calm, dim environment at night. On days when the schedule shifts, look at the daytime total and your baby's cues.
My baby was born early. Which age do I use?
The chart gives typical ranges for healthy term babies. For premature babies use the adjusted age (gestational age plus weeks of life), and talk to your pediatrician or GP if you are unsure.
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Previous and next ages: 2 month old sleep schedule · 4 month old sleep schedule · all ages in the wake window chart by age.
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