A 5-year-old needs 10 to 13 hours of sleep per 24-hour period, including any naps. That recommendation comes from the American Academy of Sleep Medicine and serves as the standard used by most pediatricians. In practice, most 5-year-olds get the bulk of that sleep at night, with only about 30% still napping during the day.
Nighttime Sleep vs. Naps at Age 5
By age 5, most children have dropped their daytime nap entirely. Only about 30% of 5-year-olds still nap, and by age 6 that figure drops below 10%. If your child still naps, those daytime hours count toward the 10 to 13 hour total. A child who sleeps 10 hours at night and naps for an hour is right in the sweet spot.
If your child has stopped napping, they’ll need to get all their sleep at night. That typically means 10 to 11 hours of overnight sleep. Some children naturally need closer to 9 hours and function well, while others need the full 11. You can gauge whether your child is getting enough by how easily they wake in the morning and how they behave during the day.
What Happens When a 5-Year-Old Doesn’t Sleep Enough
Sleep deprivation looks different in young children than in adults. Instead of appearing drowsy and sluggish, under-slept 5-year-olds often become hyperactive, impulsive, and harder to manage. They have bigger emotional reactions to minor events, swinging rapidly between moods in ways that can look like a behavioral problem rather than a sleep problem.
The cognitive effects are just as significant. Children who don’t get enough sleep pay less attention, act before thinking, and struggle to solve problems. A large NIH-supported study found that children getting fewer than 9 hours per night had less grey matter in brain areas responsible for attention, memory, and impulse control compared to children with healthy sleep habits. Those same children showed higher rates of impulsivity, anxiety, depression, and aggressive behavior. For a 5-year-old starting school, these effects can directly undermine their ability to learn, follow instructions, and get along with classmates.
Planning a Bedtime That Actually Works
The simplest way to figure out your child’s bedtime is to work backward from their wake-up time. If your child needs to be up at 7:00 AM for school and needs about 10 hours of sleep, they should be asleep by 9:00 PM. Since most children don’t fall asleep the moment they get into bed, that means starting the bedtime routine 20 to 30 minutes earlier.
A consistent routine matters more than the specific activities in it. Bath, pajamas, brushing teeth, a book or two, lights out. The predictability signals to your child’s brain that sleep is coming. Keeping the sequence and timing the same every night, including weekends as much as possible, reinforces their internal clock.
Why Light Before Bed Is a Bigger Deal Than You Think
Young children’s eyes are far more sensitive to light than adults’, and this has a direct, measurable effect on their ability to fall asleep. Research from the University of Colorado Boulder found that even dim light exposure in the hour before bedtime suppressed melatonin (the hormone that triggers sleepiness) by an average of 78% in preschool-aged children. In some children, melatonin dropped by as much as 99%.
The kicker: even 50 minutes after the light was turned off, melatonin levels hadn’t recovered in most of the children tested. This means a few minutes of screen time or bright bathroom lights right before bed can delay sleep onset well past lights-out. The practical takeaway is to turn off screens at least one hour before bedtime and keep lighting dim during the wind-down routine. Think nightlights and low-wattage lamps, not overhead fixtures.
Signs Your Child Might Need More Sleep
Some signs are obvious: difficulty waking up, falling asleep in the car on short trips, or rubbing their eyes during the day. Others are easy to misread. A child who melts down over small frustrations, can’t sit still, or suddenly starts struggling with tasks they used to handle may not have a behavior problem. They may simply be tired.
- Mood swings: Bigger emotional reactions than the situation calls for, or rapid shifts from happy to upset
- Hyperactivity: Bouncing off the walls, especially in the late afternoon or evening
- Attention problems: Trouble following directions, seeming “spacey,” or not listening
- Increased anxiety: New fears, clinginess, or reluctance to separate from parents
- Impulsivity: Acting without thinking, more risk-taking than usual
If your child consistently gets 10 or more hours of sleep and still shows these signs, the quality of their sleep may be the issue rather than the quantity.
Sleep Problems Worth Investigating
Not all sleep difficulties are solved by an earlier bedtime. Pediatric sleep apnea affects an estimated 1 to 5% of children and can silently undermine sleep quality even when a child spends enough hours in bed. Signs to watch for include snoring on most nights, pauses in breathing, gasping or choking sounds during sleep, restless sleep with frequent position changes, mouth breathing, and nighttime sweating. Bed-wetting that starts again after a long dry stretch can also be a sign.
Young children with sleep apnea don’t always snore. Sometimes the only clue is that their sleep seems restless or they’re chronically tired despite spending enough time in bed. If your child snores frequently or shows several of these signs, it’s worth bringing up with their pediatrician.