This is a little bit couterintuitive, but:
Warm water evaporates faster than cold water, yet pulls enough heat energy from your skin to make you feel colder as it does when it’s cold water. This is because the sensation of freezing or feeling warm isn’t prone to absolute temperature difference between your skin and another medium, but to how fast heat is transferred from your skin to the water. As I said, warm water is much more likely to evaporate and leave. The process of evaporation drags A LOT of energy from your skin really fast. Cold water just sits there and evaporates much slower, as it warms up un your skin, taking less energy in the same time.
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