Get ready for a dreamy night's sleep with our luxurious hybrid mattresses | Save up to 30% Off

Does Your Memory Foam Mattress Sleep Hot?

Does Your Memory Foam Mattress Sleep Hot?


When you decide to buy a new mattress, you may hear a lot about the benefits of memory foam mattresses, such as their support and comfort for your body. However, there is also a lot of noise on the internet about how it may cause sleepers to feel hot at night. Is this really true? In this article, we'll take a professional look at whether memory foam mattresses can actually cause you to overheat at night to help you make a more informed choice.


1. Does a memory foam mattress make you feel hot at night?


Memory foam mattresses, a unique mattress material, are loved by many, especially those who want a mattress that adapts to their body's curves. However, there is always a debate about whether this mattress causes sleepers to feel overheated at night. Let's dive into this issue and see the truth from a professional perspective.


The Unique Properties of Memory Foam

Memory foam mattresses were originally designed to respond to the pressure exerted by the body, thus providing personalised support to the user. However, its closed cell foam structure results in reduced breathability. This means that it has the potential to store more body heat, which results in the sleeper feeling warm.


Thermal conductivity and memory foam

Memory foam doesn't have high thermal conductivity like metal, which means it doesn't transfer heat from one part to another very quickly. Therefore, when you lie down on a memory foam mattress, the part of your body in contact with the mattress may feel warmer because this part of the mattress stores your body heat.


Physiological factors in the human body

People release heat at night as a normal physiological process. For those with a high thermoregulatory system or who sweat a lot, they may find memory foam mattresses hotter than other materials.


Improvements and technological advances

It is worth noting that memory foam mattress manufacturers now recognise this problem and have adopted various technologies to improve the breathability and cooling effect of their mattresses. For example, some high-end memory foam mattresses incorporate gel particles inside, which help disperse heat and provide a cooler sleeping experience.

 Memory foam mattresses

2. Temperature comparison of memory foam mattresses vs. traditional mattresses


When we talk about mattresses, we all want to find the kind of mattress that delivers a cool experience even on hot summer nights. Memory foam mattresses differ from traditional mattresses in many ways, and one of the most obvious differences is their temperature regulation properties. So, what are the significant temperature differences between these two mattresses? Let's take a closer look.


1. Material composition and thermal conductivity

Memory foam mattresses are primarily made of polyurethane foam, a material that responds to body temperature and makes it softer. This responsiveness also means that memory foam mattresses tend to absorb and retain body heat, resulting in the user feeling warmer. Traditional mattresses, such as innerspring mattresses, on the other hand, are usually made up of metal and other fibres, which do not absorb heat in the same way that memory foam does.


2. Breathability Comparison

I want to emphasise that breathability plays a key role in determining the temperature perception of a mattress. Memory foam mattresses have relatively poor breathability due to their dense construction, which can lead to heat being trapped in the mattress, making the surface temperature rise. In contrast, a traditional innerspring mattress offers better breathability because its structure allows air to flow freely, helping to dissipate heat.


3. Mattress technology and advancements

In recent years, in an effort to address the temperature issues of memory foam mattresses, manufacturers have adopted a number of innovative technologies, such as the use of gel particles or other cooling materials in combination with memory foam. These technologies are designed to improve the breathability of the mattress and provide a cooler sleeping experience. Traditional mattress manufacturers are also exploring ways to provide a more comfortable temperature experience, for example by incorporating a breathable top layer.


4. Individual differences and feelings

Whilst the above information provides a general framework, each individual's body temperature, metabolism and sleep habits can affect their sleep experience. Some people may find that they get a cooler night's sleep even on a memory foam mattress, while others may find that a traditional mattress is still too hot.

 Memory foam mattresses

3. Why does my bed get so hot at night?


When you lie in bed, from time to time you may feel a completely different sense of warmth than during the day. At night, even if the room temperature doesn't rise significantly, you may still feel your mattress getting hotter. So, why do mattresses become so hot at night? I'm going to reveal to you the reasons behind this from several angles.


1. Interaction between body heat and mattress


Everyone gives off heat at night. When we go into deep sleep, our body temperature drops slightly, but the heat released at this point needs somewhere to go. The mattress absorbs this heat and may store it due to the thermal conductivity of the material, causing the temperature of the mattress to gradually rise.


2. Thermal conductivity of mattress materials


Different mattress materials have different thermal conductivity. For example, a memory foam mattress may store and maintain more heat due to its structure and density, causing it to appear hotter at night. Natural latex or spring mattresses, on the other hand, may have better breathability and are less likely to accumulate excess heat.


3. Choice of bedding and bedding


Heavy comforters or non-breathable sheets can trap and store heat. When you use these bedding items, they block the flow of heat and prevent air circulation between the mattress and bedding, which can lead to heat build-up.


4. Room environment and ventilation


If your bedroom is poorly ventilated or the air is high in humidity, this can affect the dispersion of heat. Sweat evaporates more slowly in a higher humidity environment, making it easier for people to feel hot. Also, not having enough fresh air entering the room can prevent heat from dissipating effectively.

 Memory foam mattresses

4. Overheating Problems with Memory Foam Mattresses

Memory foam mattresses have become a popular choice in many people's bedrooms due to their unique texture and properties. However, some users have reported overheating problems associated with memory foam mattresses. Why does this happen?


  • Heat-absorbing properties: memory foam mattresses can change shape to conform to body curves based on body temperature. However, this property may also cause the mattress to absorb and retain more heat.


  • Density issues: Memory foam mattresses are denser, which may restrict airflow and thus reduce the breathability of the mattress.


  • Usage: Factors such as the choice of bed linen and bedspreads, room temperature and humidity may be related to overheating problems with memory foam mattresses.




We propose the following solutions to the problems mentioned above:


  1. Choose bedding with good breathability: Using sheets and bedspreads made of natural fibres such as cotton or linen can increase the breathability of the mattress, thus helping to dissipate heat.


  1. Purchase memory foam mattresses with cooling technology: Some manufacturers have introduced memory foam mattresses with a cooling gel layer that can be an effective solution to overheating.


  1. Flip and rotate your mattress regularly: this ensures even wear and tear while promoting air circulation inside the mattress.


  1. Consider the room environment: Keeping the room at a moderate temperature and ensuring good ventilation can also help solve the problem of overheating.


  1. Choose the right brand: The Suilong brand, for example, combines ergonomic research with scientific sleep solutions to avoid overheating.

 Memory foam mattresses

5. How to choose the right memory foam mattress for you?


When searching for the perfect memory foam mattress, you may be overwhelmed by the variety of options on the market. Memory foam mattresses are known for their comfort and ability to conform to the contours of your body, but how do you determine which one is best for you? Below, I will provide you with some expert advice to help you make an informed decision.


1. Consider the density of the mattress


It's important to understand the density of your mattress: density is often used to describe the quality of memory foam. A higher density means that the foam material in the mattress is more concentrated, which provides better support and a longer lifespan.


How to choose: For most people, choosing a mattress with a medium density (about 4-5 lbs/cubic foot) is optimal. This type of mattress provides good support without being too firm.


2. Pay attention to the thickness of the mattress


Why thickness is important: Thickness not only relates to the comfort of the mattress, but also how well it supports your body.


How to choose: most memory foam mattresses are between 6-14 inches thick. You should choose a thickness that provides you with adequate support and is appropriate.


3. Explore cooling technology


Understanding the importance of cooling technology: Memory foam mattresses can be warmer than other mattresses. For this reason, many manufacturers include cooling technology in their designs.


How to choose: If you're prone to sweating or feeling hot, choosing a memory foam mattress with cooling gel or other cooling technology is a good option.


4. Consider budget


Set a reasonable budget: Memory foam mattresses on the market vary greatly in price, but that doesn't mean that a higher-priced mattress is necessarily better for you.


How to choose: Determine your budget range and then consider other factors such as density, thickness and cooling technology on top of that.


Before you buy, do some research to learn about brands, read customer testimonials and third-party reviews, all of which can help you understand how well the mattress actually performs.

 Memory foam mattresses

6. Maintenance and cleaning of memory foam mattresses: ensuring long-lasting comfort and longevity


Memory foam mattresses have won the hearts of many consumers for their unique experience and support for the body. However, it requires more meticulous care and maintenance than other types of mattresses. Why? Because its material and structure are more prone to absorbing moisture and dust. So how do you ensure your memory foam mattress stays in top condition and extends its life?


1. Regular vacuuming: keeping the surface clean and healthy

The surface of a memory foam mattress tends to attract dust and tiny particles. We recommend using a hoover to gently clean the surface of your mattress every fortnight to avoid dust and bacteria build-up.


2. Use a mattress protector: preventing stains and liquid damage

A mattress protector provides an extra layer of protection for your memory foam mattress. Not only does it prevent stains from penetrating the inside of your mattress, it also reduces wear and tear. Choose a high-quality, breathable, and machine-washable cover to ensure your mattress remains comfortable.


3. Avoid direct liquid contact: extend mattress life

Any liquid, be it water or a beverage, can cause irreversible damage to memory foam. Once the liquid penetrates inside the mattress, it can lead to mould, bacterial growth and odour. Therefore, avoid eating and drinking in bed and if you accidentally spill liquid, immediately blot it up with a clean fabric.


4. Regular flipping and rotating: even pressure distribution

Although memory foam mattresses don't need to be flipped as often as traditional mattresses, rotating them regularly can prevent excessive pressure on one part. We recommend rotating your mattress every 3 to 6 months to ensure that all parts are used evenly.


5. Attention to ventilation: keep the mattress dry and fresh

Memory foam tends to absorb moisture, so you need to make sure that the environment you are in is well ventilated. Open the windows regularly to allow fresh air to circulate, this not only reduces moisture but also helps to remove any odours that may have developed on the mattress.


Understanding the properties of memory foam mattresses is vital to choosing the right mattress for you. While this material may cause some people to feel warm, modern technology has provided us with more cooling options. Before making a purchasing decision, make sure you know all the facts and try to find those memory foam products with cooling properties so you can enjoy a comfortable night's sleep every night.


Read More:

Is 10 Inches Thick Enough For A Mattress?

How To Fix a Too Soft or Too Firm Mattress

Mattress-in-a-Box in Mattresses & Accessories




Q: Do all memory foam mattresses retain heat, or is it specific to certain brands or types?


A: Not all memory foam mattresses retain heat. While traditional memory foam is known for heat retention due to its dense structure, many modern brands have incorporated cooling technologies, such as gel-infused foam or open-cell construction, to mitigate this issue.


Q: Are there any mattress toppers that can reduce the heat of a memory foam mattress?


A: Yes, there are mattress toppers specifically designed to enhance breathability and reduce heat retention. Look for toppers made of cooling gel, latex, or other breathable materials. These can help regulate temperature and provide a cooler sleeping surface.


Q: How does room temperature affect the warmth of a memory foam mattress?


A: Room temperature plays a significant role. If the room is warm, a memory foam mattress might feel warmer as it absorbs the ambient heat. To ensure a cooler sleep environment, it's a good idea to maintain a cooler room temperature, especially during warmer months.


Q: Can using different beddings or sheets make a difference in how hot a memory foam mattress feels?


A: Absolutely. Natural, breathable materials like cotton or bamboo can help wick away moisture and allow for better airflow, reducing the perceived warmth. It's advisable to avoid synthetic materials, as they can trap heat and moisture.


Q: Are there any health risks associated with sleeping on a hot memory foam mattress?


A: Sleeping on a warmer mattress can lead to increased sweating and potential disruptions in sleep cycles. While there are no direct health risks from the mattress itself, consistently disrupted sleep can lead to fatigue, reduced cognitive function, and other health issues over time.

Leave a comment

Your cart


Suilong Nimbus 12 inch Hybrid Mattress




What are you looking for?

Your cart