How Many Hours of Sleep Do Teens Need? A Parent’s Guide

How many hours of sleep do teens need? Teenagers ages 13–18 generally need 8–10 hours of sleep per 24 hours on a regular basis. This recommendation comes from the American Academy of Sleep Medicine and is endorsed by the American Academy of Pediatrics.

Sleep quality and timing matter too. Trouble falling asleep, disrupted nights, or sleeping much more than usual deserve attention—especially alongside depressed mood, irritability, school difficulties, or frequent arguments.

Understanding your teenager’s sleep can provide important clues about what is making their days harder.

What Does Enough Rest Look Like?

Some teens feel rested with eight hours, while others need closer to ten. Regularly getting only six or seven hours falls below the recommended range, even if your teen says they are used to it.

Time in bed is different from time asleep. A teenager who goes to bed at 10 p.m., lies awake until midnight, and gets up at 6:30 a.m. is getting about six and a half hours of sleep.

For a teen who wakes at 6:30 a.m., these examples show when they would need to be asleep:

• 10:30 p.m. for eight hours.
• 9:30 p.m. for nine hours.
• 8:30 p.m. for ten hours.

These are planning examples rather than a rigid bedtime prescription. Allow time to wind down and fall asleep, and consider how well your teen functions during the day.

Why Falling Asleep Can Be Harder During Adolescence

During adolescence, the body’s internal clock tends to shift later. Your teen may genuinely feel alert when you expect them to be sleepy. Early school mornings can make getting adequate rest especially challenging.

Worry, late-night phone use, caffeine, homework, and packed schedules can add to the difficulty. Some teens have too little opportunity to sleep; others have enough time but struggle to fall asleep or stay asleep.

Ask: “When you try to go to sleep, what gets in the way?” Their answer can help you understand whether the main obstacle involves timing, stress, habits, physical discomfort, or something that needs professional evaluation.

How Sleep Affects Mood and Behavior

Insufficient sleep can make it harder to concentrate, manage frustration, control impulses, and cope with everyday demands. A tired teen may appear irritable, sad, unmotivated, or easily overwhelmed.

For example, a teenager who has barely slept may struggle to get up and react strongly when reminded about morning responsibilities. Recognizing exhaustion gives the family another place to intervene alongside expectations and communication.

Could Depressed Mood Be Related to Poor Sleep?

Yes. Sleep problems and depression can influence one another: poor sleep may worsen mood, while depression can disrupt sleep or change how much a person sleeps.

How much sleep contributes to an individual teen’s symptoms cannot be determined from bedtime habits alone. Improving rest may help, but persistent sadness, hopelessness, withdrawal, or loss of interest needs attention too.

Learn more about depression in children and teens and how therapy can help.

Can Exhaustion Contribute to Oppositional Behavior?

Sleep-related irritability and difficulty regulating emotions may contribute to arguments or behavior that appears oppositional. However, poor sleep does not establish a diagnosis of oppositional defiant disorder (ODD).

An assessment considers the behavior pattern, its duration, the situations in which it occurs, its impact, and possible contributing factors. Even when a teen already has an ODD diagnosis, sleep deserves attention as part of their care.

A useful question is: “Are these difficulties more intense after poor sleep, and what changes when my teen is consistently rested?”

When Sleeping Too Much Deserves Attention

Regularly sleeping beyond the recommended range—especially with continued exhaustion or changes in daily functioning—is worth discussing with a healthcare professional. An occasional long night is different from an ongoing pattern.

Consider whether your teen:

• Is sleeping substantially longer than usual.
• Still feels exhausted after a full night.
• Is missing school or other responsibilities.
• Has withdrawn from friends or activities.
• Has noticeable changes in mood, motivation, or appetite.

Sleeping late does not necessarily mean sleeping too much. A teen who falls asleep at 3 a.m. and wakes at noon has slept nine hours, although that schedule may interfere with school and family life.

Unusually long sleep can reflect recovery from insufficient rest or accompany a medical or mental health concern. The pattern and its effect on your teen’s life help guide evaluation.

Practical Steps Parents and Teens Can Take Together

Choose a few manageable changes together, then review what helps:

• Protect time for sleep. Check whether homework, activities, and evening commitments leave enough time for rest.
• Keep a predictable schedule. Aim for consistent sleep and wake times throughout the week.
• Plan a screen wind-down. Put devices away about an hour before bed and agree on an overnight charging location.
• Review caffeine use. Coffee, energy drinks, and other caffeinated products can interfere with falling asleep.
• Make room to relax. Reading, gentle stretching, or quiet music can help your teen settle.
• Support daytime movement. Physical activity and outdoor time can support healthier sleep.
• Make the bedroom comfortable. Reduce disruptive light and noise and keep the temperature comfortable.

If worries take over at night, make time to talk earlier in the evening. When anxiety regularly interferes with sleep or daily life, learn about our anxiety therapy for children and teens. Discuss sleep supplements or medication with your teen’s healthcare provider.

Use a Sleep Diary to Notice Patterns

For one to two weeks, record bedtime, estimated time to fall asleep, nighttime waking, morning wake time, naps, and daytime sleepiness. Briefly note caffeine use, unusual stress, mood, and energy.

Review the observations together. Does irritability follow short nights? Is your teen spending nine hours in bed but sleeping only six? Does longer sleep still leave them exhausted?

Bring these observations to an appointment. A diary supports discussion; it is not a diagnostic test. Seek help promptly when symptoms are concerning rather than waiting to finish tracking.

When to Seek Professional Support

Contact your teen’s pediatrician or primary care provider when sleep difficulties persist, their usual pattern changes substantially, or tiredness interferes with daily life. Loud snoring, breathing pauses, and significant daytime sleepiness also warrant medical attention.

Mental health support may be helpful when sleep problems occur alongside persistent sadness, anxiety, withdrawal, or escalating family conflict. You can seek support while working on sleep.

When questions about mood, attention, learning, or behavior remain unclear, psychological evaluations for children and adolescents may help clarify the broader picture. Psychological testing is not routinely needed for sleep difficulties; your teen’s healthcare provider can help determine whether medical or sleep-specialist evaluation is appropriate.

You can also meet our child and adolescent mental health providers and explore their areas of expertise.

If your teen talks about suicide or self-harm, seek immediate support. In the United States, call or text 988 to reach the Suicide & Crisis Lifeline. Call 911 for an immediate, life-threatening emergency.

Common Questions About Teen Sleep

Is seven hours of sleep enough for a teenager?

Seven hours is below the recommended 8–10 hours per 24 hours for teens ages 13–18, even if they feel accustomed to that amount.

Does my 18-year-old still need eight to ten hours?

Yes. The American Academy of Sleep Medicine’s adolescent recommendation includes ages 13–18.

Can poor sleep make a teenager seem depressed or defiant?

Insufficient sleep can contribute to sadness, irritability, poor concentration, and difficulty managing emotions. These symptoms alone do not establish depression or oppositional defiant disorder.

Is sleeping more than ten hours always a problem?

No. An occasional longer night is different from persistent long sleep accompanied by exhaustion, mood changes, or difficulty functioning.

Why is my teen tired even after a full night?

Disrupted sleep, sleep timing, medical conditions, or mental health concerns may affect how rested your teen feels. Persistent daytime sleepiness warrants evaluation.

Should we wait for sleep to improve before seeking mental health care?

No. Sleep support and mental health treatment can occur together. Persistent emotional or behavioral concerns deserve attention while sleep is being addressed.

Sources and Further Reading

• American Academy of Sleep Medicine: Recommended Amount of Sleep for Pediatric Populations
• National Heart, Lung, and Blood Institute: How Sleep Affects Your Health
• National Institute of Mental Health: Teen Depression—More Than Just Moodiness
• American Academy of Pediatrics: Helping Teens Who Have Trouble Falling Asleep