How to Keep Dew Off Your Sleeping Bag

The sleeping bags often get moisture by keeping these in the open sky. If there is a rainy season, the sleeping bag gets water and moisturizes the surface. Condensation is a natural process and we cannot neglect it during camping. It occurs due to a temperature change. When the outside temperature is low, the liquefaction process occurs and moistens our sleeping bag.   

If the interior of a sleeping bag contains moisture, you have to cover it with a linen cloth. You can keep dew off by putting your sleeping bag in sunlight. As soon as it dries, place it on a campsite and protect it from dewdrops or moisture. The sleeping bag condensation is caused by the fall of water vapours during the night. Sleeping bags should be kept dry by keeping dew off of them. 

We will discuss in this article all the benefits, tips, setting of the sleeping bag and Amazon related products. Let’s start the article to learn about the prevention of dewdrops in sleeping bags.

It is natural to want to have a good time when we visit different places. Recreation is abundant in nature, and every part of it has its own taste. There are many enjoyable places to be able to relax on a beach, along the seashore, in rocky areas, in mountainous areas, in forestry areas, or in sandy, green areas. 

Everyone looks for enjoyment to live a happy life. In this technological era, no one has time to see nature and enjoy some better moments with nature. Spending time in nature is pleasant and uplifting. The best way to refresh our minds is to spend time in natural areas full of fresh air, smooth greenery, and simple life. 

Requirements For Condensation:

The condensed form of water is present in condensation. There are several requirements for condensation. Condensation is present in fog, dew drops, frost and cloud forms. Condensation requires the following things;

  • Temperature lower than the dew point temperature
  • Water vapours in air
  • Surface or place where the water vapours need to condense 
  • Saturation of air with moist
  • Thermometer for checking the higher or lower temperature
  • Relative humidity

Why Do Water Vapours Condense?  

Water vaporizes during the daytime and moves out in vapours due to an increase in the internal energy of water molecules. The water molecules remain in the atmosphere. 

When the temperature decreases, the cold temperature converts the water vapours into water droplets. Due to the weight, these droplets start to move down to the earth. 

The gravitational force acts on them and they move with a terminal velocity. Due to temperature changes, they condense on a surface or around the surface. 

What Are the Methods for Condensation?

There are artificial and natural methods of condensation. But we will discuss only natural condensation. 

In nature, When the temperature difference occurs, the water vapours present in the environment change their internal energy. The upper surface of a camp becomes moist due to condensation.

1. Requirements for Keeping Dew off the Sleeping Bag:

During the day or night of the winter season, there are more chances that the camp becomes moist. For keeping the dew off, there are the following requirements;

  • Use a high-quality sleeping bag
  • Use a linen sheet for the sleeping bag
  • Waterproof material for camping
  • Use sleeping bag liner
  • Use sheet barriers
  • Use scotch guard

2. Places Where Condensation is Possible:

There are many places where condensation occurs and, the most suitable sites for condensation are windows, ceiling, ground, vapour retarders, skylights, clothes and sheets and linen of a camp etc.

Methods to Prevent Condensation:

  • Use a ventilated sleeping bag. If you pour sweat into a sleeping bag, there are chances of condensation. By using a dry sleeping bag, we can prevent condensation.
  • By using a sleeping bag liner, sweat cannot pass through the sheet and we remain protected from condensation.
  • By using a water vapour barrier, we can protect ourselves from moisture. It is a waterproof barrier and we cannot breathe in it. 
  • If the top of a sleeping bag becomes moist, we have to use a blanket that prevents the moisture or absorption of water.
  • We can also use waterproof leather jackets to prevent the condensation of sleeping bags. If the sleeping bag has a thin covering, use another covering material that helps to remain intact from condensation.
  • Another method in which we keep the sleeping bag under sunshine. The sunlight provides energy to water droplets and increases the evaporation process. 
  • Sleeping in a room with small holes also protects from condensation due to ventilated air in a room.
  • The seams of a camp should remain closed and there should be no chances of water entrance in camping. 
  • A sleeping liner can absorb moisture and help to maintain the quality of a sleeping bag.
  • Before backpacking, we can use a pack liner that prevents moisture absorption.

3. Benefits of Dry Sleeping Bag:

  • Dry sleeping bag prevents the cold air from entering and prevents us from getting cold. 
  • It has extra protection sheets that do not allow moisture content.
  • Dry sleeping bag provides sleekness during sleeping.
  • It can protect us from the ground and helps to make the sleeping duration better.
  • Dry sleeping bag ensures the cleanliness of a camp and we can fold it easily after sleeping.
  • It requires a little space and saves the area.
  • It also protects us from pests, bugs and other harmful insects.

4. Amazon Recommended Products:

  • Coleman sleeping bag
  • Coleman rectangular sleeping bag
  • Palmetto sleeping bag
  • Synthetic sleeping bag
  • Scotia sleeping bag
  • Coleman exponent canyon sleeping bag
  • Mummy sleeping bag


During the night, there are more chances of getting wet. The dewdrops and water vapours are in a more concentrated state. The surface they touch and leave them moist. So, always use synthetic sleeping bags that prevent all unnecessary moisture inside the sleeping bag. Enjoy your trip and be happy. Best of luck!