A 5-month-old typically sleeps 12 to 16 hours in a 24-hour period, split between nighttime sleep and several daytime naps. Most of that sleep happens at night, with roughly 10 to 11 hours overnight and another 2.5 to 3.5 hours spread across daytime naps. That said, there’s real variation from one baby to the next, and where your baby falls within that range depends on their temperament, feeding patterns, and how well they connect sleep cycles.
Nighttime Sleep at 5 Months
By 5 months, many babies can sleep in stretches of six to seven hours at night. That’s what pediatric sleep experts actually mean by “sleeping through the night,” even though it doesn’t match what most adults would consider a full night’s rest. Some babies hit this milestone closer to 4 months, while others take longer. A 5-month-old who still wakes once or twice overnight for a feeding is completely normal.
Whether your baby is breastfed or formula-fed doesn’t appear to make a significant difference in how often they wake at night. A study of over 700 mothers found no difference in night wakings or night feedings between breastfeeding and formula-feeding families, which runs counter to the common belief that formula-fed babies sleep longer stretches.
Naps: How Many and How Long
Most 5-month-olds take three to four naps per day, totaling about 2.5 to 3.5 hours of daytime sleep. The structure of those naps shifts noticeably around this age. The first two naps of the day often start to lengthen, stretching to 1 to 1.5 hours each, while later naps tend to stay shorter.
A three-nap day might look something like this: a 1.5-hour morning nap, a 1.5-hour early afternoon nap, and a short 45-minute late afternoon nap. Babies who aren’t yet consolidating their naps may still need a four-nap schedule with shorter sleep periods of 30 to 60 minutes each.
Short naps are one of the most common concerns parents have at this age. Babies at 5 months don’t always link their sleep cycles during the day, so 30- to 45-minute naps are not unusual. If your baby consistently wakes after one sleep cycle, it doesn’t necessarily signal a problem. Many babies grow out of this pattern over the next month or two as their sleep architecture matures. On the flip side, if your baby naps for very long stretches, capping individual naps at 1.5 to 2 hours helps protect nighttime sleep.
Wake Windows Between Naps
A 5-month-old can generally handle 2 to 4 hours of awake time between sleep periods. Earlier in the day, wake windows tend to be shorter (closer to 2 hours after waking in the morning), and they gradually stretch as the day goes on. The final wake window before bedtime is usually the longest.
Paying attention to your baby’s wake windows is one of the most practical tools for improving sleep. Put a baby down too early and they’ll fight it. Wait too long and they become overtired, which paradoxically makes falling asleep harder. Watching for drowsy cues like eye rubbing, yawning, or fussiness gives you a more personalized signal than any fixed schedule.
The “5-Month Sleep Regression”
If your baby was sleeping well and suddenly isn’t, you may have come across the idea of a 5-month sleep regression. The reality is more nuanced. The term “sleep regression” doesn’t appear in medical literature, and there’s no evidence that all babies go through predictable sleep disruptions at specific ages. Research by sleep specialist Jodi Mindell found that only about 30% of parents of 5-month-olds reported an increase in night wakings, which suggests these disruptions are common but far from universal.
What does happen around 4 to 5 months is a permanent change in how babies cycle through sleep stages. Younger babies fall directly into deep sleep, but around this age, they start cycling through lighter and deeper stages the way adults do. That means more brief awakenings between cycles, and a baby who hasn’t learned to fall back asleep independently may need your help at each transition. This isn’t a phase that passes on its own. It’s a new normal in how your baby’s brain handles sleep.
Developmental Changes That Affect Sleep
Five months is a busy time physically. Many babies are learning to roll from back to front, and some are beginning to push up on their arms or even pull to a seated position. These motor milestones can temporarily disrupt sleep because babies sometimes practice new skills in the crib, get stuck in unfamiliar positions, or simply have a harder time settling their bodies.
Rolling brings a specific safety question. Continue placing your baby on their back at the start of every sleep. Once your baby can roll both ways, from back to tummy and tummy to back, they can stay in whatever position they find on their own. The first few times they roll onto their stomach in the crib, you can gently turn them back, but you don’t need to stay up all night monitoring their position. This is also a good time to remove any mobiles or hanging toys from the crib, since babies at 5 months may start pulling up on them.
Safe Sleep Basics at This Age
The core safety guidelines remain the same at 5 months as they were in the newborn period. Your baby should sleep alone, on a firm flat mattress with only a fitted sheet. No loose blankets, pillows, stuffed animals, or crib bumpers. Avoid letting your baby sleep in a swing, car seat (unless actively traveling), or on a couch or armchair, even during naps. These surfaces increase the risk of suffocation.
If your baby has outgrown their bassinet, a full-size crib or portable play yard with a firm mattress is the safest option. Keeping the sleep space bare may feel stark, but at this age your baby doesn’t need anything extra to sleep comfortably. A sleep sack or wearable blanket is a safe alternative if you’re concerned about warmth.
What a Typical Day Looks Like
Putting the numbers together, a realistic 24-hour snapshot for a 5-month-old on a three-nap schedule might look like this:
- Wake up: 7:00 AM
- First nap: 9:00 to 10:30 AM (1.5 hours)
- Second nap: 12:45 to 2:15 PM (1.5 hours)
- Third nap: 4:30 to 5:15 PM (45 minutes)
- Bedtime: 7:00 to 8:00 PM
- Overnight: 10 to 11 hours with possible feedings
A baby who still takes shorter naps might fit in a fourth nap, with an earlier first nap around 8:30 AM and a brief catnap in the late afternoon. Both patterns are normal at this age, and many babies bounce between three and four naps from day to day depending on how well each nap goes. Flexibility matters more than rigid timing. The schedule should follow your baby’s cues, not the other way around.