A 5-month-old typically needs 11 to 12 hours of nighttime sleep, with total sleep across 24 hours landing around 14 to 14.5 hours. That nighttime stretch won’t necessarily be uninterrupted, and that’s normal. Most babies this age still wake at least once or twice for a feeding before settling back down.
What a Typical Night Looks Like
By 5 months, your baby’s internal clock is more developed than it was just weeks ago. Babies begin producing melatonin around 3 months, which helps regulate a more predictable bedtime and longer stretches of overnight sleep. By 5 months, that system is well underway, and many babies are capable of sleeping 6 to 8 continuous hours before waking for a feed.
That said, “sleeping through the night” at this age rarely means a full 11 or 12 hours without stirring. A more realistic picture: your baby falls asleep between 6:30 and 8:00 p.m., sleeps a long initial stretch of 5 to 8 hours, wakes for a feed, then goes back to sleep until morning. Some babies still wake twice. Both patterns fall within the normal range.
Night Feedings Are Still Normal
Many parents wonder whether their 5-month-old still needs to eat overnight. The short answer: probably yes, at least once. During the first year, nighttime waking for feeds and comfort is common and expected.
For formula-fed babies, night feeds can generally be phased out starting around 6 months. Before that point, hunger is still a legitimate reason your baby wakes. For breastfed babies, the timeline is even longer. Night feeds before 12 months help maintain milk supply, so removing them early can have consequences for breastfeeding. If your baby wakes, feeds efficiently, and goes back to sleep without much fuss, there’s no pressing reason to change what’s working.
How Daytime Naps Affect the Night
Nighttime sleep doesn’t exist in a vacuum. What happens during the day directly shapes how well your baby sleeps after dark. At 5 months, aim for about 2.5 to 3.5 hours of total daytime sleep, split across 3 to 4 naps. Most babies this age are transitioning from four shorter naps to three slightly longer ones.
The first two naps of the day often start to lengthen around this age, stretching to 1 to 1.5 hours each. A shorter third (or fourth) nap rounds out the day. If any single nap runs longer than 1.5 to 2 hours, it’s worth waking your baby. Naps that are too long can steal from overnight sleep by reducing the sleep pressure your baby needs to settle well at bedtime.
Between naps, your baby should be awake for about 2 to 3 hours. These wake windows include feeding, play, and any wind-down time before the next sleep. Babies who can comfortably handle 2- to 3-hour stretches of wakefulness are usually ready for a 3-nap schedule. If your baby still gets fussy after 1.5 to 2 hours awake, four naps may be a better fit for now.
Signs Your Baby Is Overtired
One of the most counterintuitive things about infant sleep: an overtired baby often sleeps worse, not better. When babies miss their sleep window, they become harder to settle and more likely to wake frequently overnight.
At 5 months, watch for tiredness cues after 1.5 to 3 hours of awake time. Early signs include staring off, becoming quiet, or losing interest in toys. More obvious signs include fussiness, clinginess, crying, and, paradoxically, a burst of hyperactivity. If your baby suddenly seems wired and difficult to calm, you’ve likely pushed past the ideal window. Catching the earlier, subtler cues and starting your nap or bedtime routine then can make a noticeable difference in how quickly your baby falls asleep and how long they stay asleep.
The 5-Month Sleep Regression
If your baby was sleeping well and has suddenly started waking more, you may be dealing with a developmental disruption. Around 5 months, many babies are learning to roll over, and this new skill can genuinely interfere with sleep. A baby who rolls onto their stomach but can’t yet roll back will often wake up stuck and frustrated.
This phase is temporary. It typically resolves once your baby masters rolling in both directions, which takes days to a few weeks of practice. In the meantime, give your baby plenty of floor time during the day to work on the skill. The faster they become confident rolling both ways, the sooner nights improve.
Safe Sleep at This Age
Rolling brings an important safety update. You should always place your baby on their back to fall asleep. But once your baby can roll both ways on their own, you don’t need to keep flipping them back over if they shift positions during the night.
The key requirement is that the sleep surface stays clear. No blankets, pillows, stuffed animals, or bumper pads. If your baby rolls into any of these, it can block airflow. And if you’re still swaddling, this is the time to stop. A swaddled baby who rolls to their stomach faces a higher suffocation risk because their arms are restrained. Transition to a sleep sack with arms free, which provides warmth without restricting movement.
Putting It All Together
A reasonable target schedule for a 5-month-old looks something like this: bedtime between 6:30 and 8:00 p.m., 11 to 12 hours of overnight sleep with one or two feeds, a morning wake time between 6:00 and 7:30 a.m., and 3 to 4 naps totaling 2.5 to 3.5 hours. That adds up to roughly 14 to 14.5 hours of sleep in 24 hours, which aligns with the 12 to 16 hour range recommended for babies 4 to 12 months old.
Your baby’s exact numbers will vary. Some 5-month-olds need closer to 15 hours total, others do fine on 13.5. The best indicator isn’t the clock. It’s your baby’s mood and behavior during wake windows. A baby who is alert, interested in their surroundings, and generally content between naps is getting enough sleep, even if the numbers don’t match a chart perfectly.