A 5-month-old typically needs 12 to 16 hours of total sleep in a 24-hour period, including both nighttime sleep and naps. Most babies this age get around 10 to 12 hours at night (with some wakeups) and another 2.5 to 3.5 hours during the day, spread across three or four naps.
How Total Sleep Breaks Down
That 12-to-16-hour range covers everything: overnight stretches, middle-of-the-night wakeups where your baby falls back asleep, and every nap. The wide range exists because babies genuinely vary. A 5-month-old sleeping 13 hours total is just as normal as one sleeping 15. What matters more than hitting a precise number is whether your baby seems well-rested, alert during wake times, and growing on track.
Nighttime sleep makes up the largest chunk. By this age, many babies can sleep in stretches of six or seven hours before waking to feed. Some sleep longer, some shorter. One or two night feedings are still common and completely normal at five months.
What Daytime Naps Look Like
Most 5-month-olds take three to four naps a day, adding up to roughly 2.5 to 3.5 hours of daytime sleep total. Individual naps can vary quite a bit, even within the same day.
Short naps are extremely common at this age. Babies often can’t link one sleep cycle to the next during the day, so 30-to-45-minute naps are nothing unusual. That said, the first two naps of the day tend to start lengthening around five months, stretching to one to one-and-a-half hours. A short third or fourth nap later in the afternoon is perfectly fine and helps bridge the gap to bedtime.
If your baby is a long napper, capping individual naps at about one-and-a-half to two hours helps protect nighttime sleep. Too much daytime sleep can push bedtime later or cause more overnight wakeups.
Wake Windows Between Naps
At five months, most babies do well staying awake for about two to two-and-a-half hours between sleeps. The first wake window of the day is usually the shortest (around two hours after waking for the morning), and they gradually get a bit longer as the day goes on. The longest stretch of awake time, typically two-and-a-half to three hours, works best right before bedtime. This builds enough sleep pressure for your baby to fall asleep more easily at night.
If your baby is fighting a nap, the wake window may be too short. If they’re melting down well before nap time, it’s probably too long. Watching for sleepy cues like eye rubbing, yawning, or fussiness helps you fine-tune these windows to your baby’s specific rhythm.
Why Sleep Can Get Rocky at Five Months
Five months falls right in the middle of a busy developmental stretch. Between four and six months, most babies start rolling over, bearing weight on their legs, improving head control, and babbling. Your baby’s hands are getting more coordinated too, grasping and pulling objects closer. All of this new physical and cognitive activity can temporarily disrupt sleep, even in babies who were previously sleeping well.
Rolling is the biggest sleep-related milestone at this age. A baby who has just learned to roll onto their stomach may do it in the crib and then fuss because they can’t roll back yet. This phase is usually short-lived. Once rolling becomes easy in both directions, sleep tends to settle again. If your baby rolls onto their stomach during sleep on their own, you don’t need to keep flipping them back, as long as you’re placing them on their back at the start of every sleep.
Keeping Sleep Safe
Your baby should sleep on a firm, flat mattress in a safety-approved crib or bassinet, with nothing else in the sleep space. That means no blankets, pillows, bumper pads, or stuffed animals. A fitted sheet over the mattress is all you need. Place your baby on their back for every sleep, naps included.
Room sharing (keeping the crib in your bedroom) is recommended until at least six months. Offering a pacifier at nap time and bedtime is also associated with safer sleep. Avoid overdressing your baby or covering their head. If their chest feels hot to the touch or they’re sweating, they’re too warm.
Signs Your Baby Is Getting Enough Sleep
A well-rested 5-month-old is generally alert and engaged during awake time, interested in people and toys, and able to handle their wake windows without constant fussiness. They gain weight steadily and hit developmental milestones within expected ranges. If your baby consistently falls well below 12 hours of total sleep and seems irritable, overtired, or hard to settle, it’s worth looking at their schedule. Small adjustments to wake windows, nap timing, or bedtime can often make a noticeable difference within a few days.