Stay Cool: Best Sleeping Bags for Hot Weather Camping

Do you know the lightest sleeping bag in our review is the Therm-a-Rest Space Cowboy? It weighs just 1 pound 3 ounces and is good for 45 degrees Fahrenheit.¹

Finding the right sleeping bag is key for staying cool and comfy while camping in warm weather. In our guide, we've tested the best sleeping bags for hot temperatures. We aim to help you choose the perfect one for your summer trips.

We only considered sleeping bags rated at 30º Fahrenheit or higher for this review. Different companies calculate their bag's warmth differently. But, we chose 30 degrees as our baseline. This criteria helps us focus on lightweight and compact bags. A good summer bag should be light and easy to carry. It should also keep you warm without getting too hot. The ability to let in air is crucial when the nights are warm and muggy.

We also look at each bag's special features and predict how durable they are. These factors combine to give us a clear view of each sleeping bag's overall performance.

Key Takeaways

The Therm-a-Rest Space Cowboy is the lightest sleeping bag in the review, weighing just 1 pound 3 ounces.
The Feathered Friends Flicker and Sierra Designs Cloud 35 are tied for second lightest at 1 pound 7 ounces.
The Feathered Friends Flicker has the highest warmth-to-weight ratio and the best compressibility due to its 900+ fill power down.
Ventilation is crucial for summer sleeping bags, with the Feathered Friends Flicker and The North Face Campforter offering the best airflow.
The Feathered Friends Flicker is noted as the warmest summer sleeping bag tested, providing excellent comfort even at higher altitudes.

Defining Summer Sleeping Bags

Summer sleeping bags are made for warm nights. They have less insulation, so they're lighter than cold-weather ones.² Many companies are making summer bags light and comfy. This includes classic and new styles, like unique shapes. After using them in different places, we found the new kinds are better at keeping you warm but not too hot. We think more new styles will come out for summer camping.

Temperature Ratings

In summer, it's usually between 30-40 degrees F, but in the Southeast, 50 degrees is okay for camping.² For cooler times, bags between 0-15 degrees F are good. A 20-30 degree bag is best for backpacking from March to November, in places like the Great Smoky Mountains National Park.²

Factors for Evaluation

For warm weather bags, we looked at weight and size most. We needed light, small bags that still keep us warm. But for summer bags, letting air in is key too. This is important on hot, sticky nights, so you stay cool.

Weight Considerations

The sleeping bag gets lighter as the temperature rating goes up. Bags rated for warmer weather need less insulation, hence weigh less. The lightest bag reviewed is the Therm-a-Rest Space Cowboy. It's thin and rated for 45-degrees, weighing just 1 pound 3 ounces.³

The next lightest bags, both weighing the same at 1 lb, 7 oz, are the Feathered Friends Flicker and the Sierra Designs Cloud 35. If we look at the warmth-to-weight ratio, the Flicker is superior.³ It's rated for colder weather (30°F) and is more puffy than the Space Cowboy or the Cloud. Because of this, the Flicker wins the Best in Class title for us.

Based on a³ study, the weight for unisex mummy bags goes from 1 pound to 2 pounds. Prices range between $159 and $720. The temperature ratings vary widely, from 10°F to 35°F. There's a wide range of fill types, from 550-fill down to 950-fill down.

Shoulder and hip sizes are different in each, from 54 inches to 69 inches. And the packed sizes can be pretty compact, from 4.8 x 13 inches to 10 x 16 inches.

Compressibility and Packing Size

To roughly compare how well bags compress, we first put each bag in its stuff sack. We then checked the size of the package made. Yet, this method is not very accurate. Some bags include stuff sacks with special compression straps, making them much smaller.⁴ Bags like the Feathered Friends Flicker may not come with such sacks. But, they can be made much smaller in a different sack.⁴

Down vs Synthetic Insulation

The key to how much a sleeping bag compresses lies in its insulation. High-quality down, for instance, can be packed tighter than poor quality down. Down also compresses better than synthetic insulation.¹ The Feathered Friends Flicker stands out with its top-notch 900+ fill power down. It compresses better than most.¹ Following closely is the Sierra Designs Cloud, which uses 800-fill down.¹ The others, with 650-fill down, and the Therm-a-Rest Space Cowboy and Marmot Ultra Elite, having synthetic fill, also compress well.¹

Compression Sacks

Compression matters a lot for backpackers, making their gear smaller and lighter. Choosing a bag with quality down and a good compression sack is key. It can significantly reduce the space the bag takes up in your pack.⁴

Ventilation Features

In warm weather sleeping bags, good ventilation is key. Sleeper will want cool air when it's hot. Bags like the Therm-a-Rest Space Cowboy and Big Agnes Wiley have only a side-zipper for this. But, you can open these bags and fold down the top to cool off a bit.¹

The Nemo Ramsey adds Thermo Gills to the mix. These are pockets at the top that you can unzip to let out hot air. They prevent cold air from getting in, keeping you snug and cool.

Zippered Openings

The Sierra Design Cloud bag has no zipper, but a fold-over flap on top. This flap acts like a blanket and is easy to throw to the side for air. Even the footbox has a flap, letting your feet hang out if you're too warm.¹

Convertible Quilts

The most airy bags are those that can turn into quilts. Take The North Face Campforter and Feathered Friends Flicker for example.¹

With the Campforter, you remove the top to make a light blanket. If too hot, you can use just this. It keeps air flow around you. The Flicker can also be fully opened like a quilt. This lets air in and gives you room to move on hot nights.¹

Warmth Ratings

Staying warm is key for a summer sleeping bag. It should work well when it's not so hot at night.¹ None of these bags are meant for winter, just for summer and cooler nights at high places. The Feathered Friends Flicker is the warmest.¹ It stands out for its coziness without a hood. We like taking it on trips to the mountains. If you use this bag, it's a good idea to wear a beanie or a fleece with a hood to keep your head warm.

Keeping Warm on Cool Nights

The Flicker is great, but the Wiley, Ramsey, and Ultra Elite follow closely. They are all around 30-degree bags with features that trap heat like a hood and draft collar.¹ The Ramsey stands out with its Blanket Fold draft collar, making us feel warmer and cozier than other designs.

Temperature Range Suitability

The Campforter and Cloud from North Face and Sierra Designs suit temperatures around 35 degrees.¹ They are not as warm as the 30-degree bags. The Space Cowboy from Therm-a-Rest, a 45-degree bag, is the least warm.¹ It's very light and best for hot, low places. Its real limit is actually 52 degrees, not 45.

Design and Features

Features and design set different sleeping bag designs apart. This review focuses on two types: classic mummy-style bags and non-traditional designs.

Classic Mummy Styles

The Marmot Ultra Elite, Therm-a-Rest Space Cowboy, Nemo Ramsey, and Big Agnes Wiley are classic mummy bags. They have a shape that's wider at the top and narrower at the feet with a hood you can pull tight, a draft collar, and mostly a side zipper. Their shape stops cold spots and they're light but warm.⁵ Some stand out among them. The Ramsey and Ultra Elite boast stash pockets. The Wiley has a larger footbox. The Ramsey offers a Blanket Fold draft collar and Thermo Gills for ventilation.

Non-Traditional Designs

The non-traditional bags ditch the mummy style. The Sierra Designs Cloud, for instance, is zip-free, reducing bulk and weight. It keeps the hood but swaps the side zipper for a top opening with a built-in flap to cover the sleeper like a blanket.

Best Sleeping Bags for Hot Weather

Summer sleeping bags stand out in the sleeping bag world. They are made for warm weather. They are much lighter than those for cold seasons because they have less insulation.¹ Today, many brands are changing how they design these bags. They aim to make them more versatile, comfy, and really light. We've tested these bags in many places and situations. And we found that these new types tend to be better at being just warm enough, light, and keeping you cool. The Feathered Friends Flicker, Sierra Designs Cloud, and The North Face Campforter top the list. They are perfect for camping in hot weather. These bags are great at letting air in, being comfy, and very flexible.

Considerations for Backpacking

When backpacking, it's key to have gear that's light yet effective. Choose a sleeping bag under 2 pounds⁴. You'll need to decide between down and synthetic fill. Down is light and compressible but costs more and doesn't work well when wet. Synthetic is a budget-friendly choice that keeps you warm if it gets wet, but it's heavier and doesn't pack down as small.⁴

Lightweight Materials

Select a sleeping bag for temperatures from 30°F to 50°F to stay cozy but not too warm.⁴ Adding a draft collar, zipper draft tube, or a hood can really help hold in warmth on chilly nights.

Water-Resistant Shells

If you're unsure about the weather, go for a sleeping bag with a water-resistant shell.⁴ This outer layer can keep you dry from morning dew or light rain. The right mix of light materials and water resistance is essential for a comfortable yet dry adventure.

Family Camping Comforts

Family camping trips are fun and comfortable. Choosing the right sleeping bag for summer is important. Look for one that is roomy, comfy, and flexible.⁴ Rectangular bags are great for those who don't like small spaces. They allow more movement. A bag made of cotton or a cotton blend is best for summer. It keeps you cool by managing moisture.⁴

It's smart to pick sleeping bags made for families. Choose ones with two zippers for easy breathing. Some have pillows built in or pockets for your pillow. They should also easily connect to other bags. This makes sleeping better for couples or families with kids.⁵ Make sure your camping trips are comfy and fun.

Roominess and Space

For family camping, having lots of space is important.⁴ Rectangular sleeping bags allow more movement. They are roomier than mummy-style bags. This extra space helps everyone sleep better.

Couple-Friendly Options

For a couple's camping trip, a double sleeping bag can be very romantic. Find one that zips together for a shared sleeping area.⁵ This works well for families, too. Parents can sleep with their kids in the same bag. It brings everyone closer and feels safe.

Ultralight Summer Bags

For those who like to travel light, ultralight summer sleeping bags are a must. They are built using super light materials that also keep you warm. The top tier of these ultra-lightweight bags weighs just about 1 pound. But, finding one that's even lighter is the goal without losing out on coziness. Plus, these ultra-light sleeping bags can be squished down small. They help save room in your bag for other important stuff.⁶

Minimal Weight

Many prefer down insulation because it's top-notch at keeping you warm without adding much weight. Yet, there are new synthetics that do nearly as well. They might weigh a bit more but are often cheaper and handle wetness better.⁶ The Feathered Friends Vireo UL, for example, is super light at 16.2 oz. It uses 950+ Fill-Power Goose Down, which is top of the line. This makes it a great choice for those after an ultralight summer sleeping bag.⁶

High Compressibility

If you're packing for an adventure, having an ultralight summer sleeping bag that compresses well is key. The Therm-a-Rest Hyperion 20 does just that with its 900 Fill-Power Goose Down. It can be packed really small. This characteristic makes it a perfect option for those wanting ultralight summer sleeping bags.⁶

Focusing on minimal weight and high compressibility helps you choose a great ultralight summer sleeping bag. It keeps you warm and cozy on the trail without overloading your bag.⁶

Conclusion

Choosing the right summer sleeping bag is key, based on how you camp and what you like. It could be for backpacking, family camping, or needing something really light. The perfect bag will boost your comfort and the fun of your trip. Consider breathability, how warm it is for the weight, and if it packs small. Think about what's important to you such as temperature ratings, type of insulation, and the design. This helps you pick a sleeping bag that lets you sleep well and enjoy the outdoors.

Ultra-lightweight options fit well for backpackers. The “Western Mountaineering MegaLite” at $570 is a great example. It weighs 12 ounces and has 850+ fill power goose down, making it light and warm⁵. For families in warmer weather, the “Coleman Brazos” is good. Priced at $45, it provides a lot of space and warmth for spring, summer, and fall⁵. If you value warmth without added weight, consider the “Feathered Friends Egret UL 20 – Women's”. At $529, it's light (1.72 pounds) and very warm with 950+ fill power down⁵. Your choice of a summer sleeping bag will significantly improve your camping time.

Looking at details like temperature limits, insulation, and design is essential. These factors guide us to the best summer sleeping bag for our trip style. Whether you're backpacking, going with your family, or need something super light, there's a great option out there. With the best sleeping bag, you can enjoy great sleep under the sky and be ready for more adventures the next day.

FAQ

What defines a summer sleeping bag?

We consider a sleeping bag suitable for summer if it's rated at 30ºF or above. This standard temperature rating helps us select bags for our reviews. Different manufacturers use their testing methods, but a 30-degree rating is a good starting point.

What are the primary concerns when evaluating summer sleeping bags?

The main focus for warm weather bags is their weight and how small they pack. Light bags that compress well are ideal for summer. They should keep us warm but also let air in for better ventilation.

How do weight and temperature ratings typically relate in summer sleeping bags?

As the bag's temperature rating goes up, its weight usually goes down. Bags rated for higher temperatures need less insulation. This makes them lighter and easier to carry.

How do the different insulation types affect compressibility?

The type of insulation affects how well a bag compresses. High-quality down can pack into a small space better than low-quality down. Generally, down compresses more than synthetic materials.

What features are important for ventilation in summer sleeping bags?

Good ventilation is key for hot nights. Mummy bags often lack ventilation, but some that turn into quilts are better at letting air flow. This keeps you cooler when it's warm outside.

How do the different sleeping bags perform in terms of warmth?

The Feathered Friends Flicker is the warmest summer bag we tested. Even without a hood, it's super cozy, perfect for mountain trips. Other 30-degree bags and traditional designs also kept us warm. The 35-degree bags were a bit cooler.

What are the key differences between classic mummy-style bags and non-traditional bag designs?

Classic mummy bags are shaped for warmth, with less ventilation. Non-traditional designs sacrifice some warmth for better weight and air flow. They aim for a balance that suits a wider range of needs.

What are some key considerations for backpacking sleeping bags?

For backpacking, go for a light sleeping bag, under 2 pounds. Choose between down and synthetic insulation based on your needs. A bag with a water-resistant outer layer is best for staying dry outdoors.

What features are important for family camping sleeping bags?

Family camping requires bags that are roomy and cozy. Look for features like zippers for air flow and pillows. Bags that can zip together are great for making a large sleeping space.

What characterizes the best ultralight summer sleeping bags?

The best ultra-light bags weigh about 1 pound. They offer warmth and comfort without the extra weight. Down fill is great for these bags, but new synthetic materials are catching up in warmth and lightweight design.