How to Keep Your Water Bottle From Freezing (4 Easy Ways)

By: Derek Vitiello | Last Updated on December 22, 2023
It's important to know how to keep your water bottle from freezing on your winter adventures so you don't compromise your health or safety.

If you are an avid hiker who enjoys winter adventure, then there is a good chance that your water bottle has frozen at some point during the winter season. Whether you’re a seasoned hiker or new to the activity, this is something you never want to experience. In the cold, avoiding dehydration is just as important as it is in the summer, but if you don’t plan ahead, your only water source may be frozen and unusable. It’s a problem that drives people crazy, and in the worst situations, it might even force them to abandon their journey. But this is easily avoidable with a little bit of planning! In this blog post, we will share some tips to help keep your water from freezing on those cold winter hikes!

Use an Insulated Bottle

An insulated bottle is probably the easiest way to keep your water from freezing. A high-quality insulated bottle will keep your water from freezing even if you leave it in the freezer overnight. The downside is that they are usually heavy and can be expensive, but it’s pretty hard to argue how effective they are. We recommend this HydroFlask, which is insulated and comes in multiple sizes and colors.

Hydroflask 40oz Insulated Bottle

Derek uses this bottle just about every day! It keeps cold water cold, coffee stays hot, and it is about the same diameter as a Nalgene so it fits in most hiking packs. The biggest thing about the Hydroflask bottle is that not only is it vacuum insulated, it is also completely dishwasher safe!

If you don’t want to buy a new water bottle then another good option is a bottle jacket. They do a good job at keeping bottles from freezing temporarily but aren’t as efficient as a good insulated bottle.

Use a Wide Mouth Bottle Upside Down

Having a larger opening at the top of the water bottle makes a huge difference, as a smaller hole or straw will freeze much faster. After ensuring that the bottle won’t leak, carry it upside down so the threads on the cap are less likely to freeze. This also means the water will freeze from the side farthest from the opening, so it gives you more time before all the accessible liquid freezes solid.

Bring Hot Water

Sounds obvious but this is one of the easiest ways to keep your water bottle from freezing. Simply pack hot water with you in the morning before you head out on your hike. This is especially effective when paired with an insulated bottle, as mentioned above. Keep in mind that the hose on your drinking bladder will freeze a lot faster than a bottle, so stick to a bottle or buy an insulated hose for your hydration bladder.

Both of these methods work well to keep your water from freezing but they do have one downside: this works really well for day hikes, but on multi-day trips, you will have to heat your water again each morning or constantly keep it close to your body. Pro Tip: If you are camping, putting boiling water into your Nalgene and placing it in your sleeping bag is a great way to stay warm in a tent without electricity.

Use Your Body Heat

Probably one of the most underrated tricks in the book: keeping a water bottle inside your jacket or under your mid-layer so your body heat keeps your water from freezing. Read more about what to wear hiking in the winter here. Only do this if you’re already warm, as exposing your core to cold water can suck more energy than necessary. But if you’re warm, this is an easy way to keep your water in liquid form and even cool you down a little bit. And as a bonus, it also keeps your water close at hand instead of fumbling through your pack! Some winter jackets will have a large interior pocket made just for this!


Frozen drinking water on winter hikes can be quite annoying, and even dangerous in certain circumstances. But taking the proper steps and preparing warm water ahead of time can make a huge difference and help you enjoy your hike without worrying about staying hydrated. 

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Since 2017, Know Nothing Nomads has cemented itself as the “approachable experts” in everything camping, hiking, climbing, and adventuring in the Great Outdoors.

With over 60 years of experience in the outdoors, we don’t just talk about outdoor gear or recommend a good hiking trail.

We USE the gear we talk about. We’ve hiked 1000’s of miles. We have camped 1000’s of nights in the wilderness. We have sent hundreds of boulders and projects.

We don’t just know a few things about the outdoors — WE EAT, SLEEP, AND BREATHE IT.

We are not journalists from a magazine telling someone else’s stories from behind a computer. We are the ACTUAL outdoorsmen that those people write about. 

We are not a “gear lab” that runs tests on gear in life-like conditions. We are the seasoned, “trial-by-fire” experts who have taken the gear into the wilderness and USED IT. Read about our gear testing process here

We started Know Nothing Nomads to share our passion and expertise with our readers to inspire, educate, and enable you to explore the outdoors in the way that we have. And you will be more equipped and capable than ever before with the knowledge you gain here guiding you along the way.

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About The Author

Derek, Co-Founder at Know Nothing Nomads

My goal with my writing and Know Nothing Nomads as a whole is to share my passions of hiking, camping, and a love of the outdoors with our readers.

Making the difficult and uncertain feel more approachable to people that might not know enough to feel comfortable taking their first steps into the wilderness is a driving factor for me.

When I'm not writing you can find me on a trail, in a forest, or next to a river with hiking shoes on my feet and a fly rod somewhere close by.

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Hey there!

We are Derek and Ashley of Know Nothing Nomads. Whether it is hiking, camping, or just generally being outside, we love it. We are so happy that you have found our little blog and hope that you stick around a while. Feel free to contact us with any questions or get in touch with us on social media!


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