[@Neil_J_Thomson]

@Neil_J_Thomson asked the Naked Scientists:

   

It was 20 in the shade yesterday - nice and warm. So why does the swimming pool feel cold at 25 or even higher?



Neil (Kent)



What do you think?

[JMLCarter]

When you "feel cold" it is a relative sensation, i.e. it tells you not what temperature you are, but whether you are loosing heat.

Your body is at 37.5°C and air is an insulator, but water conducts heat very well.
Note how it feels cooler in the wind.