My Baby Sweats a Lot During Sleep
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published AAP, AAP, CDC guidelines
Last reviewed:
Sleep concerns affect nearly every family at some point. When it comes to sweats a lot during sleep, here is what the guidelines recommend.
The short answer
Babies commonly sweat during sleep, especially on their heads, because they spend more time in deep sleep than adults and have developing temperature regulation systems. Most of the time, it's simply that the room is too warm or your baby is over-dressed. Occasional sweating is normal, but excessive or persistent sweating warrants a pediatrician check.
Key takeaways
- Babies commonly sweat during sleep, especially on their heads, because they spend more time in deep sleep than adults and have developing temperature regulation systems. Most of the time, it's simply that the room is too warm or your baby is over-dressed. Occasional sweating is normal, but excessive or persistent sweating warrants a pediatrician check.
- Usually normal when: Your baby sweats lightly on the head or neck during the first few hours of sleep
- Call your doctor if: Your baby is sweating and has a high fever, seems limp, or is unresponsive
- Varies by age — see the age-by-age breakdown below
“To reduce the risk of sleep-related infant deaths, the AAP recommends that infants sleep on their backs, on a firm, flat surface, without any soft bedding.”
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What Parents Should Know
According to AAP, CDC guidelines, babies commonly sweat during sleep, especially on their heads, because they spend more time in deep sleep than adults and have developing temperature regulation systems. Most of the time, it's simply that the room is too warm or your baby is over-dressed. Occasional sweating is normal, but excessive or persistent sweating warrants a pediatrician check. At 0-3 months, newborns have immature temperature regulation systems and sweat glands that are still developing. They may sweat during deep sleep cycles or when working hard during feeding. Since newborns cannot regulate their body temperature well, ensure the room is 68-72°F and your baby is dressed in one more layer than you. Overheating is a SIDS risk factor, so avoid over-bundling or heavy blankets. It is generally considered normal when your baby sweats lightly on the head or neck during the first few hours of sleep. However, you should contact your pediatrician promptly if your baby is sweating and has a high fever, seems limp, or is unresponsive.
Normal vs. Concerning
By Age
What to expect by age
0-3 months
Newborns have immature temperature regulation systems and sweat glands that are still developing. They may sweat during deep sleep cycles or when working hard during feeding. Since newborns cannot regulate their body temperature well, ensure the room is 68-72°F and your baby is dressed in one more layer than you. Overheating is a SIDS risk factor, so avoid over-bundling or heavy blankets.
3-6 months
By this age, your baby's sweat glands are more functional, but temperature regulation is still maturing. Babies this age often sweat on their head and neck during deep sleep, especially in the first few hours after falling asleep. This is normal. However, if your baby is drenched in sweat, is difficult to wake, or seems unwell, check for fever or illness and ensure the sleep environment isn't too warm.
6-12 months
Older babies may sweat more during developmental leaps when their brains are very active during sleep. They may also sweat if they're wearing sleep sacks rated for colder temperatures than your home, or if they've been crying hard before settling. Check that your baby isn't over-dressed, the room isn't too warm, and there's adequate airflow. If sweating is accompanied by snoring, restless sleep, or mouth breathing, mention it to your doctor as it could indicate sleep apnea.
12-24 months
Toddlers can sweat during very active dreams or if they're fighting off an illness. Some toddlers run warm and naturally sweat more. Ensure their sleep environment is cool, they're wearing breathable fabrics like cotton, and they're not over-bundled. Excessive sweating along with poor weight gain, extreme fatigue, or other symptoms may rarely indicate an underlying medical condition and should be evaluated.
What to Tell Your Pediatrician
- Describe when you first noticed sweats a lot during sleep and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby is consistently drenched in sweat every night despite a cool room and light clothing.
- Mention if sweating is accompanied by snoring, gasping, or restless sleep.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Your baby sweats lightly on the head or neck during the first few hours of sleep
- Sweating resolves when you adjust room temperature or remove a layer of clothing
- Your baby is otherwise healthy, eating well, and meeting developmental milestones
- Sweating occurs occasionally, such as after a very active day or during teething
- Your baby's skin is not clammy, and they wake up happy and alert
- Your baby is consistently drenched in sweat every night despite a cool room and light clothing
- Sweating is accompanied by snoring, gasping, or restless sleep
- Your baby seems excessively tired during the day or is having difficulty gaining weight
- You notice sweating primarily on one side of the body or during feeding
- Sweating is accompanied by rapid breathing, pale or bluish skin, or extreme fussiness
- Your baby is sweating and has a high fever, seems limp, or is unresponsive
- Your baby has cold, clammy skin along with very rapid or labored breathing
- Your baby has a bluish tinge to lips or skin
- Sweating is accompanied by vomiting, dehydration, or signs of serious illness
What You Can Do at Home
- Keep track of when you notice sweats a lot during sleep — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that your baby sweats lightly on the head or neck during the first few hours of sleep — this is generally within the range of normal.
- At 0-3 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Maintain a consistent bedtime routine. Keep the sleep environment cool, dark, and quiet.
- While monitoring at home, seek immediate care if your baby is sweating and has a high fever, seems limp, or is unresponsive.
Related Resources
Milestone Checklists by Age
Track your baby's developmental milestones from birth to 5 years with age-specific checklists.
Baby Sleep Guide
Age-by-age sleep needs, schedules, and evidence-based sleep strategies.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is sweats a lot during sleep normal?
When should I call the doctor about sweats a lot during sleep?
When is sweats a lot during sleep normal?
What causes sweats a lot during sleep?
What should I mention to my pediatrician about sweats a lot during sleep?
Is sweats a lot during sleep normal at 0-3 months?
Is sweats a lot during sleep normal at 3-6 months?
Should I go to the ER for sweats a lot during sleep?
Does sweats a lot during sleep go away on its own?
References
- [1]American Academy of Pediatrics. Safe Sleep and Room Temperature. HealthyChildren.org. AAP
- [2]American Academy of Pediatrics. SIDS and Other Sleep-Related Infant Deaths: Updated 2016 Recommendations. Pediatrics, 2016. AAP
- [3]Centers for Disease Control and Prevention. Safe Sleep for Babies. CDC.gov. CDC
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss My Baby Sweats a Lot During Sleep.
Things to mention
- Describe when you first noticed sweats a lot during sleep and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby is consistently drenched in sweat every night despite a cool room and light clothing.
- Mention if sweating is accompanied by snoring, gasping, or restless sleep.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your baby is consistently drenched in sweat every night despite a cool room and light clothing
- Sweating is accompanied by snoring, gasping, or restless sleep
- Your baby seems excessively tired during the day or is having difficulty gaining weight
Urgent signs to report immediately
- Your baby is sweating and has a high fever, seems limp, or is unresponsive
- Your baby has cold, clammy skin along with very rapid or labored breathing
- Your baby has a bluish tinge to lips or skin
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of sweats a lot during sleep are normal. Talk to your pediatrician if your baby is sweating and has a high fever, seems limp, or is unresponsive.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Sleep Concerns
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The ideal awake time between naps (called a "wake window") increases as your baby grows. Newborns may only handle 45-90 minutes awake, while toddlers can manage 4-6 hours. Getting wake windows right is one of the most effective ways to improve nap quality, because both too-short and too-long wake times lead to poor sleep.
Is a Bath Before Bed Really Necessary?
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An ideal bedtime routine for babies and toddlers is 20-30 minutes. Shorter routines may not give enough time to wind down, while routines longer than 45 minutes can become a stalling tactic. Consistency in the routine order matters more than exact length.
Is My Baby's Bedtime Too Early?
For most babies over 3 months, bedtime between 6:00-8:00 PM is appropriate. A bedtime that is too early can cause early morning wakings (before 6 AM) or long periods of wakefulness in the middle of the night. However, during nap transitions or on days when naps were short, an earlier-than-usual bedtime helps prevent overtiredness.
Is My Baby's Bedtime Too Late?
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