Why does water at the same temperature as air, feel colder than the air?
by 
Cyndi Ninja
ANSWERS: 8
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It does not. When you go into the water and then come out of the water your body is cooled as the air passes past the water on your skin. The water acts as a kind of amplifier for the wind.
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What do you think-- 100 degrees temperature recorded at the Indian meteorological center is hotter than boiling water?
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the reason why water at 2degrees celsius feels colder than the outside air is that your hand in the outside air, there is an air pocket of cold air and in this pocket the air even though it is cold has a slight insulating property as opposed to cold water, where water has no insulating properties unless the water is warm already, but as soon as you get out of warm water lets say from a hotsprings immeidiatly you get cold because water has a natural ability to evaporate water, hence the cooling effect of perspiration same thing. with cold water, water can only get so cold without it taking form of ice, that has an insulating property, and your skin exposd to cold water there is no air pocket and insulating property
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Water is a better conductor, and will draw the warmth away from you faster than air will (thermal conduction due to the density of the surrounding environment).
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When the body temp is 98 degrees F and the air and water are colder, the water feels colder because of the conduction aspects discussed elsewhere. However, when the water and air are greater than body temperature, the water will feel hotter that the air for similar reasons.
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Your skin is 99 degrees Fahrenheit or 37 Celsius, and the air is usually 70 Fahrenheit or 21 Celsius. Every time an air molecule strikes your skin, it picks up energy and bounces off at an average of 85 Fahrenheit or 29 Celsius. (This is really oversimplified, but useful.) Water at the same temperature is 1700 times as dense as air. This doesn't mean that 1700 times as many molecules bounce off your skin, but it does mean that one heck of a lot more do, and every one of them carries away energy.
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I'm probably just re-saying what other posts said but... as a scuba diver, I learned that water draws the body temperature away from you 20 times as fast as air does. Therefore, when it's 85 outside, you could go naked the whole day and, although your body would be losing heat, your body replenishes the heat very easily. If in the water at 85, you'd be shivering in less than an hour. Also, I don't know the exact temp but I believe you die if your body temp goes to 80 or 90. Something like that. Look it up.
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Water draws energy and carrys it to the ground
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