Why Toddlers Wake Up at Night (And Proven Ways to Fix It)
A warm, medically responsible guide explaining why toddlers wake during the night and how to support healthier, calmer sleep with gentle, evidence-based strategies.
Toddler sleep can feel like a puzzle. Just when you think you have a routine that works, your little one suddenly starts waking again. Sometimes it happens at midnight. Other times it is 2 a.m. or 4 a.m., and you are left wondering whether something is wrong or if this is simply another phase. If you feel tired and confused, please know many mothers experience the same cycle.
Understanding why toddlers wake up at night becomes much easier when you look at their development through a gentle, realistic lens. Toddlers between 12 and 36 months go through tremendous emotional, physical, and cognitive changes. Their sleep is naturally affected by these transitions. Some children handle these changes quietly while others express them loud and clear at night.
This guide explains the most common reasons toddlers wake up and provides practical, medically supported ways to help your child sleep more consistently. You can also track patterns and wake-ups with the Baby Sleep Tracker to understand your toddler’s rhythm more clearly.
Table of Contents
- Why Toddler Sleep Changes So Often
- Reason 1: Separation Anxiety
- Reason 2: Overtiredness
- Reason 3: Hunger or Growth Spurts
- Reason 4: Nightmares and Night Fears
- Reason 5: Sleep Regression
- Reason 6: Teething or Illness
- Reason 7: Overstimulation and Screen Time
- How to Build a Toddler Sleep Routine That Actually Works
- Should You Sleep Train a Toddler?
- When Night Wakings May Need Medical Attention
- Frequently Asked Questions (FAQ)
- Medical Disclaimer
- About the Author
Why Toddler Sleep Changes So Often
Toddler sleep is not broken. It is developing. Experts often explain that sleep in the toddler years depends on brain growth, emotional development, and environmental comfort. Toddlers are still learning the skill of self-soothing, and their sleep cycles are shorter than adults.
A typical toddler sleep cycle lasts 45 to 60 minutes. Between cycles, they partially wake. If they feel unsettled, they may cry or call for you.
The main reasons sleep changes:
- fast developmental leaps
- emotional overwhelm
- hunger or growth spurts
- fear of separation
- overstimulation
- discomfort or illness
When you understand the reason behind the waking, you can support your toddler with more patience and confidence.
Reason 1: Separation Anxiety
Separation anxiety peaks around 18 to 24 months but can occur at any time in toddlerhood. Toddlers do not yet understand that “mama is in the next room” means safety. To them, separation feels like danger.
Signs this is the cause:
- crying instantly when you leave
- waking and calling for you repeatedly
- wanting to sleep closer to you
- refusing bedtime even if tired
Gentle ways to help:
- create a predictable bedtime routine
- offer extra cuddles before sleep
- use a soft nightlight
- reassure your child with simple phrases like “I am nearby”
- avoid sudden exits
Most toddlers sleep better once they feel emotionally safe.
Reason 2: Overtiredness
Many parents assume that keeping toddlers awake longer helps them sleep better. But research suggests the opposite. Overtired toddlers release stress hormones that make it harder for them to settle and stay asleep.
Signs of overtiredness:
- hyperactivity before bed
- crying during pajamas or brushing
- waking frequently in the first half of the night
- early morning rising
What helps:
- age-appropriate bedtimes
- consistent nap times
- dim lights and quiet activities before sleep
A rested toddler sleeps far better than an exhausted one.
Reason 3: Hunger or Growth Spurts
Toddlers go through many growth spurts. During these times, hunger can increase, and they may wake up for extra comfort or calories.
Signs this may be the cause:
- waking at the same time nightly
- eating more during the day
- irritability around mealtimes
- pulling you toward food or milk
What helps:
- offer balanced evening meals
- avoid heavy sugar close to bedtime
- ensure hydration throughout the day
A steady eating schedule supports nighttime sleep.
Reason 4: Nightmares and Night Fears
Around age two, toddlers develop imagination. This beautiful milestone sometimes leads to nighttime fears or nightmares.
Signs:
- waking suddenly with a cry
- pointing to something “scary”
- clinging tightly
- resisting sleep due to fear
Supportive ideas:
- comfort them gently
- reassure them with calm words
- avoid anything frightening before bedtime
- keep the environment calm and predictable
Night fears often lessen as toddlers understand the difference between real and pretend.
Reason 5: Sleep Regression
Sleep regressions are common around 12, 18, and 24 months. These periods occur when developmental leaps disrupt sleep temporarily.
Why regressions happen:
- new skills like walking or talking
- rapid brain growth
- emotional changes
- separation anxiety
Regressions are frustrating but temporary. Staying consistent with routines helps toddlers return to stable sleep.
Reason 6: Teething or Illness
Physical discomfort often disrupts sleep. Toddlers may wake more when teething or feeling unwell.
Signs:
- drooling or swollen gums
- ear pulling
- restless sleep
- reduced appetite
- extra clinginess
What helps:
- speak with your pediatrician about pain-relief options
- offer cold teething toys
- keep your toddler hydrated
Comfort is the most important support during these times.
Reason 7: Overstimulation and Screen Time
Toddlers absorb everything around them. Too much stimulation or evening screen time can keep their brain active long after bedtime.
Signs of overstimulation:
- trouble settling
- resistance to bedtime
- bursts of energy late in the evening
What helps:
- quiet play before sleep
- dim lighting
- screen-free evenings
- calm, consistent bedtime routine
A peaceful environment supports healthier sleep patterns.
How to Build a Toddler Sleep Routine That Actually Works
A predictable routine tells your toddler, “It is time to rest.” Consistency creates emotional safety.
A simple, effective bedtime routine:
- Warm bath
- Gentle lotion or massage
- Quiet storytime
- Breastfeeding or warm milk if age-appropriate
- Soft lights and comforting words
- Putting toddler down sleepy but awake
Toddlers thrive on repetition. The routine becomes a cue that bedtime is safe and comforting.
Should You Sleep Train a Toddler?
Sleep training is a personal choice. Many doctors recommend gentle approaches that respect emotional development.
Possible methods:
- gradual withdrawal
- check-and-comfort
- routine shaping
- consistent calming phrases
If you choose sleep training, ensure it fits your child’s temperament and your comfort level. Avoid methods that leave your toddler distressed for long periods without support.
When Night Wakings May Need Medical Attention
Consult your pediatrician if you notice:
- loud snoring
- pauses in breathing
- persistent mouth breathing
- frequent night terrors
- sleepwalking
- chronic restlessness
- ongoing pain or discomfort
Sleep issues linked to health conditions should always be evaluated.
Frequently Asked Questions (FAQ)
Q: Why does my toddler wake up screaming?
A: It could be nightmares, night terrors, hunger, or emotional overwhelm. Look for patterns to understand the cause.
Q: Should I ignore my toddler at night?
A: Toddlers need reassurance. Offering calm presence is more effective than full ignoring.
Q: Is co-sleeping wrong?
A: Not inherently. What matters is safety and whether everyone sleeps well.
Q: When will my toddler sleep through the night?
A: Every child is different. Many toddlers improve sleep between 3 and 4 years as emotional regulation matures.
References and Further Reading
- American Academy of Pediatrics: HealthyChildren Sleep Guide
- Centers for Disease Control and Prevention: Child Sleep Recommendations
- National Institutes of Health (NIH): Pediatric Sleep Research
Medical Disclaimer
This article provides general educational guidance about toddler sleep. It does not replace medical advice, diagnosis, or treatment. Always consult your child’s healthcare provider with concerns about nighttime waking or sleep behavior.
About the Author
Abhilasha Mishra writes about child development, sleep health, and supportive parenting. She blends scientific understanding with compassionate guidance to help mothers feel confident and informed.