It's true, when it's very warm and dry, you really feel more thirsty and your lips get all dry, at least when it's damp or humid you absorb the moisture through your skin! I remember last year, it was extremely mild in december- not like this winter! One day, it was about 12 C, I think it was about the 10th or 11 of december, so that's really way above normal for that time of year. We went for a ride that day and it was really neat- very foggy, damp and warm with almost no wind. It was only foggy right near the water, but it was so cool. And because the air was so moist I hardly felt thirsty at all.