Why is a cold beer so delicious after a day of skiing? Possibly because the only water you've had since your morning coffee was a single hot cocoa. Even a Bud Lite tastes good at such moments.
Regardless of weather, it's easy to get low on water without realizing it. Competitive swimmers know this well. A rule of thumb is that if you do not need to pee on some regular basis, your hydration might be low. Yes, it's easier for guys.
Hiking for more than a couple of hours requires liquids. It surely can perk you up when you mistake wilting for fatigue. The best plan is to stay ahead of it.
5 Ways to Carry Water While Backpacking
Somewhat related, Is coffee dehydrating? (No)