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How to Keep Baby Warm at Night

In this post, you can find tips and products to help your baby sleep safely and keep them warm at night during the cold winter months.

Brrr. It’s getting so cold out. I am thinking of all of you mamas that have a newborn right now, because I cannot imagine wintertime with a newborn. Sending my thoughts and warmth your way. xoxo

Today, I want to share five tips to help you keep your baby warm at night, all while adhering to safe sleep guidelines.

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How to Keep Baby Warm At night

Safe Sleep Guidelines

Luckily, I had Lennox in the summer, so by the time the cold weather came, he had already backed on a couple of layers of baby chub to help keep him warm during the bone-chilling winter months.

Regardless, I still practiced safe sleeping practices.

Experts say that until a baby’s first year of life, “soft objects, loose bedding, or any objects that can increase the risk of entrapment, suffocation, or strangulation” should be kept out of the baby’s sleep area.

So, this means absolutely no blankets.

How to Keep Baby Warm At Night

Our first winter month with Lennox was a struggle for Carlos and I. We lived on the bottom floor of an apartment complex, and let me tell you; it was cooooollllddddd. Brr. We ended up getting a rinky-dinky space heater that we thought would be a good idea to put in Lennox’s room to keep him warm. However, that thing had a mind of its own. Sometimes we would look at the monitor, and it would have a red alert saying too hot, and at other times it was pushing into the low 60s.

I think we used it for a couple of days or so during which sleep was not a thing, because not only was Lennox an extremely sensitive sleeper until seven months old but with the space heater, we were up constantly checking the thermostat and making sure Lennox was okay.

My advice: ditch the space heater, unless you invest in a nice one that actually maintains consistent heat and is safe for a nursery. has a whole article on safe space heaters and offers some great recommendations.

Below, I want to give you some of my best tips that helped us keep Lennox warm and in slumber during those cold winter months, all while practicing safe sleeping.

How to Keep Baby Warm At Night

How to keep baby warm at night

1. Practice Safe Sleeping Practices

For your baby’s safety, it is important to follow of safety protocols for infant sleep. You can find more in-depth information regarding infant safe sleeping practices here at Pediatrics: Official Journal of the American Academy of Pediatrics.

Here are some important highlights:

  • A baby should sleep on their back for every sleep
  • They should sleep on a firm sleep surface
  • Soft objects should not be placed in the crib
    • No pillows, quilts, sheepskin, or loose bedding (blankets, non fitted sheets
    • Infant Sleep Clothing are preferred
    • Avoid use of bumper pads and crib liners
How to Keep Baby Warm At Night

2. Keep your nursery’s temperature between 65-70°

After my struggles, I ditched my cheap thermostat and monitored the central air in my apartment. I kept it a little higher than I would have liked, so that way during the nighttime, Lennox’s room would maintain a temperature of 65-70°, which is the recommended temperature for a nursery.[1]

Now that I live in a townhouse, it is even harder to keep the upstairs heated. To help direct heat to Lennox’s room, I close the vents to less-frequently used areas in the house.

3. Keep a humidifier running.

Now, since you will be running your heat more often, you must keep your humidifier plugged in and running to prevent your baby from getting a common cold or becoming irritated from the hot air. Lennox has Eczema, and the dry air from the heat has always triggered it even more, so our humidifier is a necessity.

We have two of these Vick’s Starry Night Cool Moisture Humidifiers. They are awesome, and to this day, Lennox uses the starts that project from the humidifier as his night light.

4. Have the right fitted sheets

Since babies shouldn’t sleep with loose objects, investing in the perfect fitted sheets are a must. An awesome mom in my mom group recommended these Soft Chenille Fitted Crib Sheets to me during Lennox’s first winter, and to this day, we still put them on his toddler bed to keep him extra warm at night. They are soft, warm, and provide a layer of comfort to your infant’s sleep, all while following the safety protocol.

5. Layers, Layers, Layers

If your baby is out of a swaddle, here are some great options to layer your baby up to keep her warm at night. Adding a onesie, or socks underneath these items can be useful, just watch out for overheating.

Swaddle Blankets

Swaddles are great to use for newborns until 3 months of age. Not only do they keep newborns warm, but they help calm their moro reflex which gives them the feeling of being startled. Swaddles will help your baby sleep longer as well as it provides a womb-like sensation.

Sleep Sacks

Sleep sacks are fantastic because they have a closed bottom to keep your baby warm. Many of the long-sleeved sacks also have built-in mittens to keep baby’s hands warm. Even better, they have zips for easy changing in the middle of the night. Here are some great options below:

Baby Merlin’s Magic Sleep Suit

This product is awesome. It serves as a transition from the swaddle to normal sleep. It provides warmth and also establishes good sleeping habits.

Footed Pajamas

Well I hope these tips and items help for you. Out of all of these items, the Soft Chenille Fitted Crib Sheets are a must have you need to get now!! I wish that I could sleep with sheets like this, but unfortunately DH gets hot with regular sheets alone, so I am out of luck.

Keep those babies safe and warm!! Please let me know in the comments below if you have any recommendations on how to keep a baby warm during the winter, or let me know of any products that you love that I did not list in this post!!! Thank you and happy winter!


Wednesday 31st of March 2021

Hahahhaa I totally get you! I used to get cold pretty easily but then I've met my husband. He taught me to ventilate the room every evening and... sleep in the tent in winter! Amazing adventure. I also wanted our child to be resilient... We've been using sleep training pretty soon. It was this book: we were following since newborn and the main training at 4 months. Great stuff! Although at 3 months we took Mia for her first camping trip in a tent! Amazing! It was late fall and we've had a very warm swaddle prepared and she's been sleeping like an angel!

Ann H

Thursday 28th of January 2021

Thank for great tips! Although my baby is most comfortable at 72 degrees. Although maybe the warmer swaddle would work as well? Anyway, we're having this sleep training program to follow and it's been going great but I was obsessed if Nancy isn't cold. And in fact - I believe those 2 degrees make difference! Now, with this right temperature and this book - - she's a sleeping angel!


Tuesday 7th of January 2020

Great tips! We had that merlin sleep suit. We used sleep sacs prior but my daughter loved to escape so it was too dangerous!


Tuesday 7th of January 2020

I love using sleep sacks for my kiddos! I switch them up depending on the season. They're currently using the fleece sleep sacks from Halo. They even have ones with foot holes for older toddlers! Love them!

Jen Van Haitsma

Monday 6th of January 2020

Thanks for these tips! Safety is so important! I’m glad mine run hot like my husband lol