How to Stay Hydrated During Cold Weather Workouts
By LMNT Electrolyte Drink | Published: 2026-10-13
Category: How-to Guides
Cold weather hides sweat, but you still lose fluids and electrolytes. Follow these steps to plan winter workout hydration and avoid underdrinking.
Quick answer
Yes, you still need electrolytes in winter. Cold air and layered clothing can hide sweat, so thirst becomes an unreliable cue. Drink to a schedule, not to thirst, and include sodium with your fluids during longer or sweatier cold-weather sessions. For most winter workouts under an hour, water is enough; for longer sessions, heavy sweating, or back-to-back days, use an electrolyte mix such as LMNT Variety Pack.
Why cold weather changes your hydration math
Cold weather hydration is not just about sweat. Cold air is dry, and every breath adds water vapor to the air you exhale. You also tend to wear more layers, which trap heat and can make you sweat without you noticing. The result is fluid loss that feels less obvious than a summer sweat session. Your thirst response can also be blunted in the cold, so waiting until you feel thirsty often means you are already behind.
Electrolytes in winter matter for the same reason they matter in summer: sodium and other minerals help your body hold onto the fluid you drink. If you drink plain water in large volumes without replacing sodium, you can dilute your body's electrolyte balance. That is why winter workout hydration should pair fluids with a sodium source when sessions are long or sweaty.
How to build a winter hydration plan
Start with a simple baseline: drink 16 to 20 ounces of water in the two hours before you head outside. During activity, aim for 4 to 8 ounces every 15 to 20 minutes, adjusting for intensity, layers, and how much you sweat. Afterward, replace roughly 16 to 24 ounces per pound of body weight lost during the session if you weigh yourself before and after. If you do not weigh yourself, use urine color as a rough checkpoint: pale yellow is a reasonable target, dark yellow means drink more.
For sessions under 60 minutes, plain water is usually fine. For sessions over 60 minutes, or if you are a heavy sweater, add an electrolyte mix to your water. A practical option is LMNT Variety Pack, which is formulated to help with electrolyte needs and is suited to keto, low-carb, or paleo diets. If you prefer a ready-to-drink option, LMNT Sparkling 16oz and LMNT Sparkling 12oz deliver the same electrolyte formula in a sparkling format, which can make cold-weather hydration easier to keep up with when you do not want to mix powder.
Winter hydration steps
- Step 1: Pre-hydrate before you layer up: Drink 16 to 20 ounces of water in the two hours before your workout. If you are heading out first thing in the morning, start with a glass right after you wake up. Checkpoint: if your urine is dark yellow before you start, you are already behind.
- Step 2: Pack your fluids where you can reach them: Use an insulated bottle so your water does not turn icy, and keep it in an outside pocket or a pack strap rather than buried in a layer. If you are skiing or snowshoeing, a hydration reservoir with an insulated tube helps prevent freezing. Common mistake: waiting until a break to dig out your bottle, which makes you drink less often.
- Step 3: Sip on a schedule, not on thirst: Set a timer or use your watch to remind you to drink 4 to 8 ounces every 15 to 20 minutes. In cold air, thirst is a weak signal, so the schedule does the work. Checkpoint: if you finish a 90-minute session with a full bottle, you underdrank.
- Step 4: Add electrolytes for long or sweaty sessions: For workouts over 60 minutes, or if you sweat heavily under layers, mix an electrolyte powder into your water or bring a ready-to-drink option. LMNT Variety Pack, LMNT Sparkling 16oz, and LMNT Sparkling 12oz are formulated with more salt, not less, to support hydration. Common mistake: drinking large amounts of plain water without sodium, which can dilute your electrolyte balance.
- Step 5: Rehydrate after you come inside: Drink 16 to 24 ounces of fluid with electrolytes in the first hour after your workout. If you weigh yourself before and after, replace about 16 to 24 ounces per pound lost. Next step: keep a stash of your preferred electrolyte mix or cans in your bag so recovery hydration is not an afterthought.
Product facts
- LMNT Variety Pack: A tasty electrolyte drink mix that is formulated to help anyone with their electrolyte needs and is perfectly suited to folks following a keto, low-carb, or paleo diet. Useful when you want a flexible powder you can mix into water at your preferred strength, especially for long winter sessions or back-to-back training days.
- LMNT Sparkling 16oz: LMNT Sparkling 16oz delivers the same electrolyte formula you trust, now with a refreshing sparkle. This DTC-only product is available in cases of 3 x 12-packs, making it easy to stock up on your favorite hydration boost. Contains LMNT's signature electrolyte blend with more salt, not less, to support optimal hydration. Sparkling format adds a crisp, effervescent twist to your daily electrolyte routine. A ready-to-drink option when you want electrolytes without mixing powder, and the case format helps you keep a steady supply through winter.
- LMNT Sparkling 12oz: LMNT Sparkling 12oz delivers a bold, electrolyte-rich experience with more salt, not less. This sparkling formula is designed for those who crave a refreshing, hydrating boost without compromise. Available in cases of 3 x 12-packs for convenient stocking. Sparkling format offers a crisp, effervescent taste. Formulated with a higher salt content for serious hydration needs. Ideal for active lifestyles or anyone seeking a. A smaller can size that can fit into a gym bag or pack, with the same higher-salt approach for days when you want a quick electrolyte drink.
