How Much Water Do You Need For A Day Hike?
Ounces & Liters Explained
So how much water should you bring for a day hike? When putting your water supply together, you’ll need to consider a few factors. Consider the terrain, weather, and the hike or trail’s level of difficulty. Here’s the breakdown, plus an easy conversion guide and the best YETI bottles to bring on your hike.
How Much Water to Drink Per Hour While Hiking
A general rule: Half a liter (17 oz) per hour of moderate hiking.
| Hike Duration | Minimum Water Needed | Hot Weather / Strenuous Conditions |
|---|---|---|
| 1 - 2 hours | 16–20 oz (0.5L) | 24–32 oz (0.75–1L) |
| 2 - 4 hours | 32–40 oz (1L) | 48–64 oz (1.5–2L) |
| Half-day (4–5 hours) | 64–80 oz (2–2.5L) | 80–120 oz (2.5–3.5L) |
| Full-day (6–8 hours) | 80–128 oz (2.5–4L) | 128–160 oz (4–5L) |
Choosing the Right YETI Bottle for Your Hike
In extreme heat, high altitudes, or intense elevation gains, you may need over a gallon (128 oz / 4L) to stay hydrated. While you don’t want to carry too much weight, you don’t want to be caught without water. Since it’s not realistic to carry a gallon-sized jug, consider packing two smaller sized bottles. The load will lighten as you consume the water. Here’s what to bring based on your hike length:
| Hike Length | Best YETI Bottle | Why? |
|---|---|---|
| 1–2 hours | 26 oz Rambler® Bottle | Compact, lightweight, easy access |
| Half-day (4–5 hours) | 36 oz Rambler® Bottle | More capacity without extra bulk |
| Full-day (6–8 hours) | 1L/34 oz Yonder® Bottle | High-volume without carrying a full jug |
| Hot weather/strenuous hikes | Half-Gallon Jug | Extra hydration, still packable |
| Overnight hikes | One-Gallon Jug | Plenty of water for drinking & cooking |
How to Carry Water on a Hike
For short hikes (1–3 hours) → A YETI 26 oz or 36 oz Bottle is easy to carry and keeps water ice-cold.
For longer hikes (4–8 hours) → A larger 1.5L / 50 oz Yonder® Bottle is ideal, or bring two smaller bottles for balance.
For multi-day treks → Use a YETI Half-Gallon or One-Gallon Jug as your basecamp supply and refill as needed.
Signs You’re Not Drinking Enough Water on the Trail
Dry mouth or feeling thirsty (you’re already behind)
Fatigue or dizziness (dehydration drains energy fast)
Muscle cramps or headaches (sodium and water loss catching up)
Dark yellow urine (light yellow or clear = hydrated)
Rule of thumb: If you’re sweating, you should be drinking.
Final Thoughts: Stay Hydrated & Keep Moving
Half a liter (17 oz) per hour is a solid baseline.
Longer, hotter hikes require up to a gallon (4L).
The right YETI Rambler® keeps water cold and easy to access.
Find the perfect YETI bottle for your next hike.
