Why Is Your Memory Foam Mattress Too Hot? Solutions To Make It Cooler

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Memory foam mattresses have skyrocketed in popularity. Plenty of households own at least one. It is so widely used that by 2023, the memory foam mattress market is expected to be worth $8 billion. Compared to the $5.67 billion in 2019, that’s a huge gap. 

But, this product is not without its flaws. The main complaint among users is that they can’t figure out what makes the memory foam mattress too hot. They have trouble sleeping at night, particularly in summer. 

Luckily, there is a way to solve the problem. Even though it is impossible to alter the temperature of the actual mattress, it’s possible to optimize the sleeping surface with a few handy tips. 

Here, we will show you exactly how to make that happen. We’ve prepared a couple of tactics for cooling your mattress and more. So, let’s get right to it. 

What Makes the Memory Foam Mattress Too Hot?

Many people are asking why my memory foam mattress is so hot? But, to understand where the heat is coming from, you first need to take a look at the structure of the material. There are multiple reasons for hot bedding.

For the foam to give you the support you need, the material has to be somewhat dense. The denser the material, the less airflow is going to pass through the mattress, which is why it traps the heat. 

In fact, memory foam retains more body heat than any other material used for manufacturing mattresses. As a result, people feel uncomfortable and unbearably hot at night. 

Another contributor is shaping. The mattress is designed to cradle your body comfortably and mold to your actual body shape. To do that, it uses heat. Once you are surrounded by your mattress, the heat your body generates gets stuck in the mattress. Since you need air to cool down, and your body is cradled up, it hinders your potential to thermoregulate.

Here are a few methods you can use to tackle the issue. 

5 Ways to Fix the Sweating Problem When Sleeping on a Memory Foam Mattress

There is no need for you to be grasping at straws because you can’t find the right ways to cool down the bedding. Now that you know what’s making your memory foam mattress too hot, it’s time to fix the problem. Here, we have compiled the perfect solutions for cooling memory foam mattress you’d wish you’d known sooner.

Get a Topper

  • Provides extra circulation
  • Additional airflow
  • Wicks the sweat away
  • Cools the body as it begins to overheat

The key to reducing the heat is to get two things – circulation and airflow. Since the memory foam is quite a dense material, you will need to rely on a different layer to give you that airflow you need. 

That’s where a topper can come in handy. This can be that memory foam mattress too hot solution you’ve been looking for.

A topper is actually a sheet, thicker than regular sheets that adds an additional layer to your bedding. The topper meant to be used on memory foam is manufactured of breathable materials like cotton and wool. These fabrics make circulation a breeze and the entire sleeping experience a lot comfier. 

The wool might look a little bit counter-effective since people use it in the winter to stay warm. But, on a topper, it has both a cooling and warming effect. With wool, you no longer have to worry about the sweating bed. It wicks the sweat away in summer and cools down the body as it slowly begins to overheat. 

If you don’t like to experiment with wool, you can go with a gel foam instead. It’s designed to maintain a cold sensation and doesn’t keep any of the heat the bedding creates. The choice is yours.

Upgrade the Bed


  • Lift the bed off the floor
  • Add a frame with plenty of slats
  • Boosts breathability 

If your bed is attached to the floor and you are using a memory foam mattress, it’s no wonder why you are sweating your guts out. Even the bed needs enough circulation to control the temperature. So, instead of blaming it on the mattress, try to put some extra attention on the bed frame. 

Get a sturdy frame that will have just enough openings for a healthy airflow. The frame should have wooden or metal slats evenly dispersed across the entire surface. This will boost breathability and make the sleeping experience a lot more comfortable. 

Another thing you should consider is lifting the bed off the floor. Add a platform or a frame that will place the mattress above the floor. With adequate support, solid structure, and plenty of slats openings, the mattress will feel cozier. 

Replace the Sheets


  • Skip the synthetics
  • Choose cotton or natural bamboo fibers

The mattress is not the only reason you are feeling too hot at night. Some materials are major heat contributors that will retain even more heat than the mattress creates. 

Take synthetic sheets, for example. The material doesn’t provide any airflow, which makes heat retention even more difficult to bear. They can be an excellent choice in winter, but not that convenient for summer. Instead, you should opt for top-quality cotton sheets. 

They create an amazing cooling effect. The material is meant to promote healthy circulation and is very soothing on the skin. The same effect can be achieved with fibers made of natural bamboo. The preferred thread number for this kind of sheet is usually 250 to 400. 

This is the cheapest solution and the most practical option for cooling down the bedding. 

Reduce the Temperature In the Room


  • Turn off heating 
  • Ventilate the room
  • Adjust the temperature

If the room is too hot, the mattress will absorb and retain the heat. Any thermostats or other heating systems should be turned off. That way, less warmth is going to accumulate in the mattress, which will reduce the sweating. 

The optimal temperature for the bedroom when sleeping is around 60 to 70 ºF. Anything above that will just contribute to uncomfortable sleep. Of course, it can be different for everyone, but in general, this is the ideal temperature for a good night’s rest. 

You can achieve that by opening a window when preparing the bedroom for sleep or adjusting the heating system to get the desired effect. Remember, something as simple as heat adjustments can go a long way. 

Change the Sleeping Attire


  • Skip the wool
  • Choose silk or cotton

Sometimes, no matter how hard you try, you will keep sweating in bed. The memory foam bedding gets unbearably hot, and it’s impossible to get a shut-eye. But, have you considered changing the pajamas? 

That’s right; a sleeping attire can have a drastic impact on heat retention. The thicker and denser the material, the harder it is to doze off. That’s exactly why you should pay attention to the fabric. It might seem tempting to go for the trendier alternatives, but there is more to fabric than it meets the eye. 

Here are some of the more popular fabrics on the market you should know about. 

  • Silk: If you want a magical material that will control the heat, you can’t go wrong with this one. Silk is the go-to choice for staying cool at night. It’s more expensive to get the real deal, but it’s totally worth it. 
  • Cotton: As long as you pick 100% cotton, you are in for a treat. This is one of the most comfortable and breathable fabric for sleepwear that won’t irritate your skin. It’s the perfect insulator for a warm climate. But, if you are sweating profusely, it may not be the ideal choice.
  • Wool: If you want to stay warm, then choose wool. But, if you hate sweating at night, particularly in summer, stay away from this fabric as much as you can. Not only will it retain the heat, but it can also expose you to overheat. It’s difficult to get the proper airflow and feel comfy. 


Don’t throw away the memory foam when it gets too hot! You don’t have to waste your money on completely new bedding. There are many ways you can solve the issue and get a good rest. 

All the options we’ve listed here can definitely come in handy. You can get a topper, change the sheets, adjust the warmth in the room, or wear different pajamas. Select the option that suits you best and figure out the most practical tactic you will love. As long as you try any of these options, you will fix the problem in no-time.

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