Why Does My Cooling Mattress Make Me Sweat?

Verified by: Neil Stanley

Last Updated: 06 Jul 2024

couple sleeping on their side

Are you puzzled as to why your cooling mattress, meant to provide a cooler night’s sleep, makes you sweat? 

You’re not alone. 

Many people invest in cooling mattresses, expecting relief from night sweats, only to wake up drenched. 

This frustrating issue can be caused by several factors, from the materials used in the mattress to environmental conditions. 

This article will explore why a cooling mattress might make you sweat and offer practical solutions to help you enjoy a sweat-free, restful sleep.

Key Takeaways

  • Cooling mattresses can sometimes make you sweat due to materials, room conditions, or bedding choices.

  • Optimizing your sleep environment and choosing the right bedding can help mitigate this issue.

  • Understanding and addressing these factors can lead to a cooler, more comfortable night's sleep.

  • Find out the top rated cooling mattresses in 2024 from Best Cooling Mattress.

Understanding the Problem: Why Your Cooling Mattress Might Be Making You Sweat

1. The Science Behind Cooling Mattresses

Cooling mattresses are designed to regulate body temperature using materials that promote airflow and dissipate heat. 

These mattresses often use technologies such as gel-infused memory foam, phase-change materials, and breathable covers. 

However, the effectiveness of these materials can vary based on several factors.

2. Potential Reasons for Sweating on a Cooling Mattress

Even with advanced cooling technology, there are several reasons why you might still experience sweating.

Mattress Materials and Construction

Certain mattress materials can retain heat despite their cooling claims. 

For instance, memory foam, even when infused with cooling gel, can trap heat if it’s too dense. 

The mattress cover and overall construction can also impact airflow and heat retention.

Room Temperature and Humidity

Your sleep environment plays a crucial role. 

If your room is too warm or humid, it can counteract the cooling effects of the mattress. 

Ensuring proper ventilation and maintaining a cooler room temperature can help.

Bedding Choices

The type of sheets, blankets, and mattress protectors you use can also affect how cool you feel. Heavy or non-breathable bedding can trap heat and moisture, making you sweat.

Personal Factors

Individual factors like your body temperature, health conditions, and lifestyle choices (such as diet and hydration) can also influence how much you sweat at night.

How to Mitigate Sweating on a Cooling Mattress

To enjoy the benefits of your cooling mattress, consider the following tips:

1. Optimize Your Sleep Environment

  • Adjust Room Temperature: Keep your bedroom cool and comfortable (around 60-67°F is ideal for most people).

  • Use Fans or Air Conditioning: Enhance air circulation and reduce humidity with fans or air conditioning.

2. Choose the Right Bedding

  • Breathable Sheets: Opt for sheets made from natural, breathable materials like cotton or linen.

  • Lightweight Blankets: Use lightweight, breathable blankets to avoid trapping heat.

3. Personal Adjustments

  • Sleepwear: Wear light, moisture-wicking sleepwear to stay cool.

  • Hydration: Stay hydrated throughout the day to help regulate your body temperature at night.

4. Mattress Maintenance Tips

  • Regular Cleaning: Clean your mattress regularly to maintain its cooling properties.

  • Rotate Your Mattress: Rotate your mattress periodically to ensure it even wears and maintains its effectiveness.

When to Consider a Different Mattress

If you’ve tried the above solutions and still sweat excessively, it might be time to consider a different mattress. Look for options with better cooling technologies or materials that suit your needs.


Sweating on a cooling mattress can be frustrating, but understanding the factors contributing to this issue can help you find effective solutions. 

Optimizing your sleep environment, choosing the right bedding, and making personal adjustments can help you enjoy cooler, more comfortable sleep. 

If all else fails, consider reevaluating your mattress choice to find one that meets your needs.


Why do I sweat more on my cooling mattress than on my old one?

Cooling mattresses can sometimes trap heat due to their materials and construction, especially if they are too dense or covered with non-breathable fabrics.

Can a mattress topper help reduce sweating?

A breathable mattress topper from materials like latex or wool can enhance airflow and reduce heat retention.

What bedding materials are best for keeping cool?

Natural materials like cotton, linen, and moisture-wicking fabrics are best for maintaining a cool sleep environment.

Is sweating at night always related to the mattress?

Only sometimes. Other factors like room temperature, bedding, sleepwear, and personal health conditions can also contribute to night sweats.