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Babies Peeing Through Diapers at Night: How to Stop It!

Babies Peeing Through Diapers at Night

If your baby has ever encountered diaper leaks, then you know how FRUSTRATING it can be for both you and your baby!

Instead of more restful nights, you will be woken up at the sound of your baby crying in the middle of the night because they are completely soaked in their own urine!

In addition to this, a wet diaper can make your baby really fussy and can even cause a diaper rash.

Luckily, there is a great solution to your baby’s nighttime diaper leaking problem!

Here’s how you and other fellow moms can prevent overnight diaper leaking problems to let your baby sleep peacefully!

Table of Contents
Table of Contents

Baby Peeing Through Diapers at Night: 10 Main Causes

When your baby pees, it ends up becoming a leaky diaper. The baby’s mattress and the baby’s legs then become soaked.

So, what are the MAIN causes of a leaky diaper?

1. The Placement of the Diapers

A DRY DIAPER at night is a secret to help your baby sleep better!

To help your baby have better and drier sleep, you must SECURE their diapers on ALL SIDES.

The diaper’s waistband must be snug at the back of the diaper, and the leg holes need to be “untucked.”

Sometimes there might be extra space around the thighs, or in some cases, it rides further up the back than the front. This is the reason why the diaper leaks.

2. Tummy Sleepers

If your baby sleeps on their TUMMY, this could also be a reason for leaks.

This is because if your child’s diaper is already full, the pressure on the front or sides of the diaper can make it likely to leak.

3. Overnight Feedings

If your baby still feeds at night but refuses to change, that might make it more likely for your baby to have a full diaper all night long.

4. Your Baby Moves Around a Lot 

Your baby is likely to move around a lot during their toddler years when they sleep.

Because of this, their diaper is constantly shifting and rearranging, which then increases the chances of overnight diapers leaking for your baby.

5. Diaper Sizes

More liquid might not be soaked because your babies’ diapers are either too small or too big.

As mentioned earlier, the diapers should have a SNUG FIT.

6. Damaged PUL/TPU

If you just switched to cloth diapers, then it is also a reasonable explanation for nighttime diaper leaks.

If your baby leaks through their cloth diapers, this means that the PUL (Polyurethane Laminate)/TPU (Thermoplastic Polyurethane) may be damaged.

This layer of your cloth diapers is the waterproof layer that keeps leaks away and seals in moisture.

7. Flooding

Flooding happens when your baby can hold its bladder overnight. Your baby peeing is sort of like a DAM that can flood a diaper overnight.

This can be frustrating for parents because it often results in leaks, but it doesn’t have to!

8. The Diaper Is Super Absorbent

It is also bad if overnight diapers are TOO absorbent.

Overstuffing your baby’s diaper may actually be causing leaks rather than trying to prevent them.

More diaper liners are not always better. Plus, they do NOT ensure a dry diaper.

9. Material of Nighttime Diapers

The QUALITY of your overnight diapers might not be up for the task.

If you want a fresh diaper all night long, then you might want to swap out your regular diapers and switch diaper brands.

You can also try cloth diapers. These are eco-friendly and re-usable throughout their baby years!

10. Potty Newbie

If you think there is nothing wrong with your nighttime diaper, then it could probably be your baby!

Your baby might be too young for potty training and does not have control over their reflexes, so they might pee or poop anytime during the day and night.

You’re going to be changing sheets in the middle of the night for a while.

How to Keep Your Baby’s Diaper from Leaking at Night: 10 Easy Tips

Now that we know possible reasons why a nighttime diaper can leak, we can move on to how to keep your baby’s diaper from leaking at night.

Here are 10 SIMPLE STEPS you should follow to avoid a wet diaper and help the baby sleep better!

1. Change Diapers Before Baby’s Bed Time

Always remember to put your baby in a fresh diaper at night before putting them to sleep!

If a child’s diaper at night is dry, this will make them feel more comfortable, and your baby will sleep better at night.

A dry and clean diaper also helps prevent your baby from peeing through diapers at night because it can absorb as much as possible when your baby goes to the bathroom.

Remember, the hygiene of your baby always comes first!

2. Use an Overnight Diaper

An overnight diaper is specifically designed with double the absorbency to keep your baby dry for 12+ hours. 

However, these cost more than regular diapers because they are specifically designed to be more absorbent.

Despite their price, they are DEFINITELY worth it for any baby struggling with a leaking overnight. 

This will help your baby sleep better at night without any diaper change needed!

3. Opt for a Larger Diaper

A diaper’s size can affect your baby’s sleep!

Once you notice that they leak through their diaper at night, you should switch to a larger-sized diaper.

A bigger diaper helps give more space (and more absorption) for your baby overnight.

With this being said, make sure that the larger diaper is still snug enough at night. You don’t want space around his thighs that could leak!

4. Use Some Diaper Liners

Your baby probably needs a diaper change because they have too much urine at night.

Too much urine means their diapers leak at night, which cannot possibly make babies comfortable!

An easy way to make your baby drier is by using DIAPER LINERS, and here’s what to keep in mind when using them:

  • You add the diaper liners on top of the cloth diaper.
  • You should also pay attention to whether your baby is always leaking through the front or the back of their diaper at night.
  • Add the diaper liner on whichever side is always wet in the morning.

5. Add in Booster Pads

If your baby soaks through their diaper up until their mattress pad, then you should try a BOOSTER PAD.

Booster pads are baby products that serve as an extra layer of defense and absorb up to 8 ounces of fluid before letting the diaper below take charge.

A booster pad added to a diaper is a great way to avoid untimely leaks and provide you with extra confidence when you fear leakages the most.

You simply add this on top of their disposable diapers!

Your baby won’t need any diaper change because their diaper won’t be leaking at all. This will help your baby sleep through the night as soundly and gently as possible. 

6. Put the Diapers in Correctly

Diapers usually leak at the FRONT, and to fix this, all you have to do is adjust the diaper.

Here are some tips on how to put on the diaper correctly:

  • Make sure to pull the diaper forward just a little, so it sits higher on your baby’s stomach, which helps absorb more in the front area.
  • Tape it at a slightly upward angle to put more pressure on these areas and help absorb more liquid if the baby has a full bladder overnight.

7. Follow a Sleep Training Guide

As mentioned earlier, your baby peeing through their diaper could be because they sleep on their stomach. 

If you are sleep training and the baby is peeing through diapers at night, you have to go through the hassle of:

  • Cleaning your baby up
  • Changing the crib sheets
  • Redoing a mini routine
  • And STILL have your baby try to settle herself

All of that extra pressure on the front of their diaper seems to lead to more problems with peeing through diapers overnight. 

You can do some sleep training exercises to help your baby sleep in an upright position.

In addition to not peeing at night, sleep training has lots of benefits such as:

  • Encourage toddlers to be independent
  • Less crying
  • Better sleep at night

8. Use a Mattress Pad

Slip in a mattress pad on top of their crib. This will serve as your baby’s “second diaper.”

A mattress pad also gives an extra layer between your baby and the bed!

When your baby leaks through their diaper and pajamas overnight, you can change the PJs and switch out the extra blanket without having to wash all of the sheets too!

You should invest in a waterproof crib mattress pad cover and as many crib sheets as you can store in a linen closet, so you don’t have to rush to wash the linens every single morning like clockwork.

9. Follow a Feeding Schedule

We are not suggesting depriving your babies of their milk, but rather you should limit their intake.

If your baby is struggling with a leaky diaper, limiting their liquid intake should be in order.

According to Dr. Satya Narisety, MD, your baby’s last feeding must be two to three hours before going to sleep.

Limit sugary drinks in the evenings (or all the time since your baby doesn’t need juice or sugary drinks) since these extra beverages might increase overnight bedwetting.

10. Point Boy Parts Downward

This is an important step that lots of parents forget!

Make sure you pull the nappy high enough to prevent leakage. Always make sure to point his boy parts down before strapping up his diaper.

This makes sure that he is peeing toward the most absorbent part of the diaper!

Why Is My Baby Peeing So Much?

A child’s bladder is very tiny, unlike us adults!

This is why your baby urinates a lot throughout the day — even in their sleep.

Don’t be alarmed by this because it is completely NORMAL. This isn’t a sign of a urinary problem, but rather your baby is urinating because of the amount of fluids they are drinking.

You should see at least six to eight wet diapers each day, but your child could have up to 10 or more!

In fact, your baby may urinate as often as every one to three hours or as infrequently as four to six times a day.

In a healthy child, urine is a light to dark yellow color.

  • The darker the color, the more concentrated the urine;
  • The urine will be more concentrated when your child is not drinking a lot of liquids.

In the first week after birth, you may see a pink or brick-red stain on the diaper, often mistaken for blood. In fact, this stain is usually a sign of highly concentrated urine, which has a pinkish color.

As long as the baby is wetting at least four times a day, there probably is no cause for concern!

TAKE NOTE: If the pinkish staining persists, consult your pediatrician.

What to Do If Your Baby Keeps Peeing Through Diapers

It could be a diaper problem more often than not, but it can also be a baby problem!

The upside to finding a solution to the leakage problem is that you don’t need to worry about a fussy baby every night, and you won’t have to change the sheets every single night anymore.

Here is the simpler version of the tips:

  • Change into clean ones before bedtime
  • Buy overnight diapers
  • Buy big diapers
  • Add in some diaper liners
  • Put in booster pads
  • Adjust accordingly
  • Follow a sleep schedule
  • Adjust feeding schedule
  • Boy parts must be facing downwards

Furthermore, you can also switch diaper brands; one popular one is The Honest Company Diapers, which we highly recommend in our Top Natural & Disposable Diapers Buying Guide.

If the peeing persists even after trying all these steps, it may be time to consult your pediatrician.

Frequently Asked Questions

Can You Put Two Overnight Diapers on a Baby at Night?

Putting two overnight may be a bit bulky, but you can still opt for it!

You can definitely do this, but only if you have those specifically made for heavy wetting, like an overnight diaper with built-in extra absorbency.

How Often Can You Change a Diaper at Night?

The rule of thumb is that wet diapers at night are okay, but number two diapers should be changed when you catch them.

With some skill, you might be able to change a bowel movement diaper without waking your baby.

Generally, you will change a newborn’s disposable diaper every two to three hours and a cloth diaper every 90 minutes.

Newborns eat more, so they use up more diapers. As babies grow up and their eating habits change, the number of diaper changes will decrease.

Can Your Baby Go All Night Without a Diaper Change?

Nighttime diaper changes are necessary if it is fully soaked or if the baby poops during the night.

Eventually, the baby will stop pooping at night and will also urinate less in her sleep. In such a case, one nighttime diaper will suffice, and you can stop changing these at night.

In general, it is important to change the diapers often enough to reduce the risk of diaper rash.

This is a very common thing in babies, and in most cases, there’s no need to worry if your baby gets one. Most over-the-counter rash creams will do the trick!

How Long Can a Baby Stay In a Diaper Overnight?

An overnight diaper is an extra absorbent and designed to remain dry for up to 12 hours.

Most aren’t much bulkier, but they can be a bit more expensive than daytime disposable diapers.

On the other hand, you must change a poopy diaper IMMEDIATELY as not changing a soiled one can cause infections.

While changing a soiled diaper at night, do not interact or play with the baby as you would do during the day.

Should I Size Up on an Overnight Diaper?

If your baby or toddler wakes up from frequent leaks, then size up

You can choose a nighttime diaper and go one size up from what your little one wears during the day.

When Do Babies Stop Peeing at Night?

Once you start potty training your child, their body will slowly learn how to stay dry throughout the night.

For them to sleep through the night without urinating, their bladder needs to be able to hold the urine they make during the night. 

Remember to be PATIENT and know that there will come a day when their beds will stay dry!

Final Thoughts

Now that you know what to do about a leaky diaper, you will be less stressed, and you will also wonder less about what’s going on!

In summary, you can:

  • Change your child’s diaper into clean ones before bedtime
  • Buy overnight diapers
  • Buy a bigger diaper size
  • Try different diaper brands
  • Add in some diaper liners
  • Put in booster pads

You can begin experimenting with these tips to find out which one is most useful and timely for you! Rest assured that once you’ve figured it out, your baby can sleep soundly and peacefully. 

It’s time to shop for good diaper brands that can stop overnight diaper leaks from occurring and keep your baby dry at night!


November 16, 2022 – Minor content edits

July 13, 2022 – Minor content edits

About the author

Angelica Graham

A few years ago, Angelica found out about all the plastic and toxic ingredients that got into most children’s products. And this worried her to no end. Because of this, she began to research what the best ingredients and materials were for children and made it her mission to share this information with other mothers.