A 5-month-old needs 12 to 16 hours of total sleep per 24 hours, including naps. Most babies this age get around 10 to 11 hours at night and fit in 3 to 4 hours of daytime naps spread across two or three sleep periods.
What the Daily Sleep Breakdown Looks Like
The 12-to-16-hour range comes from both the American Academy of Pediatrics and the National Sleep Foundation, and it applies to infants from 4 through 12 months. That’s a wide window because every baby is different. Some five-month-olds thrive on 13 hours, others genuinely need closer to 15 or 16.
At night, most 5-month-olds are capable of sleeping 6 to 8 hours in a stretch, though many still wake once or twice for a feeding. The remaining sleep hours come from naps. Two to three naps per day is typical at this age, with each lasting anywhere from 30 minutes to two hours. If your baby is a short napper, they may need a third nap in the late afternoon to avoid becoming overtired before bedtime.
Night Feedings Are Still Normal
Many parents wonder whether their 5-month-old should be sleeping through the night without eating. The short answer: not necessarily. During the first year, waking at night for feeds and comfort is common and developmentally appropriate. Formula-fed babies can sometimes begin phasing out night feeds around 6 months, while breastfed babies often continue night nursing well beyond that. Dropping night feeds too early for breastfed babies can reduce milk supply.
If your baby wakes, eats a full feeding, and goes right back to sleep, that’s a healthy pattern at five months. If they’re waking frequently but barely eating before drifting off again, sleep associations (needing to suck or be held to fall back asleep) may be driving the wake-ups more than hunger.
Why Sleep Can Fall Apart Around This Age
Five months sits in a busy developmental window. Growth spurts make babies extra hungry. Early teething pain can start. Your baby is likely learning to roll, reaching for objects, and becoming far more aware of their surroundings. All of this excitement can temporarily disrupt sleep, even if things had been going well.
Routine changes matter too. Starting daycare, traveling, or even a simple cold can throw off a pattern that took weeks to build. These disruptions are normal and usually resolve within one to two weeks as your baby adjusts. Around 6 months, many babies who had been sleeping through the night start waking again, which catches parents off guard but is a well-documented developmental phase.
Signs Your Baby Needs More Sleep
An overtired baby doesn’t just look sleepy. They often cry louder and more frantically than usual, become clingy, and lose interest in toys, feeding, or anything happening around them. Some overtired babies sweat more than normal because the stress hormone cortisol rises with exhaustion. You might also hear “grizzling,” a prolonged whine that hovers just below a full cry.
Catching the early signs of tiredness before your baby crosses into overtired territory makes bedtime and naps much easier. Watch for yawning, droopy eyelids, rubbing their eyes, pulling on their ears, staring into the distance, or turning away from stimulation like lights and sounds. Furrowed brows, back arching, and fist clenching are also cues. Once you notice these, your baby is telling you they’re ready to sleep within the next few minutes.
Wake Windows Between Naps
At five months, most babies can comfortably stay awake for about 1.5 to 2.5 hours between sleep periods. The first wake window of the day is usually the shortest, and the one before bedtime is often the longest. If your baby is fighting naps or taking a long time to fall asleep, the wake window may be too short. If they’re melting down before nap time, it’s likely too long. Adjusting by even 15 minutes can make a noticeable difference.
Sleep Training at 5 Months
Five months is within the age range when sleep training becomes an option, since most pediatricians consider babies ready from about 4 months onward, provided there are no underlying health concerns. You don’t have to sleep train, but there are signs it might help.
If your baby needs increasingly elaborate rituals to fall asleep (rocking that used to take 2 minutes now takes 45), if they wake more frequently at night and each wake-up takes longer to resolve, or if old soothing techniques seem to frustrate rather than calm them, these suggest your baby is outgrowing their current sleep associations but hasn’t learned to fall asleep independently. Another readiness sign: your baby sometimes sucks their fingers or attempts to self-soothe when they wake early from a nap. That means the self-soothing capacity is developing.
Being able to tell the difference between your baby’s hungry cry, tired cry, and pain cry also makes sleep training more practical, since you’ll know when a wake-up genuinely needs a feeding versus when your baby is looking for help getting back to sleep.
Safe Sleep Setup
However your baby sleeps, the environment matters. Place your baby on their back in their own sleep space, whether that’s a crib, bassinet, or portable play yard. The mattress should be firm and flat with only a fitted sheet on it. Keep blankets, pillows, stuffed animals, and bumpers out of the sleep area. Avoid letting your baby sleep on a couch, armchair, or in a swing or car seat (unless they’re actually in the car). These guidelines, updated by the American Academy of Pediatrics in 2022, are designed to reduce the risk of sleep-related infant deaths.