A 5-month-old needs about 14.5 hours of total sleep in a 24-hour period. That typically breaks down to 11 to 12 hours at night and 2.5 to 3.5 hours of daytime naps spread across 3 to 4 naps. Every baby is a little different, but this range gives you a solid target to work toward.
Nighttime Sleep at 5 Months
By 5 months, many babies can sleep in stretches of 6 to 8 hours at night without waking. That doesn’t mean your baby will sleep 11 or 12 hours straight. Most 5-month-olds still wake at least once during the night, often for a feeding. Waking for feeds during the first year of life is normal, so a middle-of-the-night feeding at this age isn’t a sign that something is wrong.
If your baby was previously sleeping longer stretches and has suddenly started waking more often, you may be dealing with a sleep regression (more on that below). The key number to focus on is the total nighttime hours. If your baby is logging roughly 11 to 12 hours between bedtime and morning wake-up, including any brief wake-ups, they’re on track.
How Many Naps and How Long
Most 5-month-olds take 3 to 4 naps per day, adding up to about 2.5 to 3.5 hours of daytime sleep total. Some naps will be longer than others. It’s common for one or two naps to stretch 45 minutes to over an hour, while others last only 30 minutes. Short naps are frustrating but normal at this age, since babies are still developing the ability to link sleep cycles together.
The last nap of the day is often the shortest. Think of it as a bridge to bedtime rather than a full restorative sleep. If your baby is taking four naps, that final catnap might only be 20 to 30 minutes, and that’s fine.
Wake Windows Between Naps
A 5-month-old can typically handle 2 to 3 hours of awake time between naps. This is a noticeable jump from the 1.5 to 2 hours that worked at 3 months. Getting wake windows right is one of the most effective ways to improve both nap quality and bedtime.
Too short a wake window and your baby won’t be tired enough to fall asleep easily. Too long and they become overtired, which paradoxically makes sleep harder. When a baby gets overtired, their body releases stress hormones like cortisol and adrenaline that actually rev them up instead of calming them down. An overtired baby often cries louder and more frantically than usual and fights sleep even though they desperately need it.
The most reliable approach is to watch your baby’s tired cues rather than sticking rigidly to the clock. Early signs that your baby is ready for sleep include yawning, droopy eyelids, staring into the distance, and rubbing their eyes. Some babies pull on their ears, suck their fingers, or start turning away from toys, sounds, or your face. If you notice furrowed brows, grimacing, or back arching, your baby is telling you they’ve had enough stimulation. Fussiness, clinginess, and a sort of prolonged whining (sometimes called “grizzling”) are later cues. If your baby is sweating along with being fussy, that’s another signal: cortisol rises with tiredness and can make an overtired baby extra sweaty.
The 5-Month Sleep Regression
Sleep regressions can absolutely start at 5 months. If your baby was sleeping well and has suddenly started waking more at night, fighting naps, or becoming extra fussy around sleep, a regression is the likely culprit.
At this age, babies are developing rapidly. They’re learning to roll over, starting to sit up, and getting better at grasping objects. All of that new brain activity can make it harder for them to settle down. They’re also becoming much more aware of their surroundings, noticing sounds and movements that didn’t register before, which can pull them out of lighter sleep stages.
Physical growth spurts are common around five months too, which means increased hunger and potentially more frequent feeding demands at night. Common signs of a regression include increased night wakings, shorter naps, difficulty falling asleep at the usual times, more fussiness overall, and changes in appetite. The reassuring part: this is temporary. Most regressions last 2 to 6 weeks, and your baby’s sleep will typically settle back into a more predictable pattern once the developmental leap passes.
Safe Sleep at This Age
Five months is right around the time many babies learn to roll, which raises questions about sleep position. The American Academy of Pediatrics recommends always placing your baby on their back to sleep. If your baby rolls onto their stomach on their own during the night, you don’t need to keep flipping them back, as long as they’re sleeping on a firm, flat mattress with nothing else in the crib.
Keep the sleep space clear of loose blankets, pillows, stuffed animals, and crib bumpers. Your baby should sleep in their own space, whether that’s a crib, bassinet, or portable play yard, and not on a couch, armchair, or in a swing or car seat (except while actually riding in the car). These guidelines stay consistent through the first year.
Putting It All Together
A typical day for a 5-month-old might look something like this: wake up in the morning, stay awake for about 2 hours, take a nap, then repeat that cycle 3 to 4 times before an evening bedtime. The total sleep goal is around 14.5 hours, with the bulk of that happening at night. If your baby is consistently getting significantly less than that, say under 12 hours total, and seems overtired or cranky during the day, it’s worth looking at whether wake windows need adjusting or whether the sleep environment could be improved.
That said, some babies naturally sleep a bit more or less than the average. The best indicators that your baby is getting enough sleep aren’t the exact numbers on a tracker app. They’re a baby who wakes up relatively content, can engage and play during awake periods, and isn’t constantly showing signs of overtiredness throughout the day.