why does it hurt more to jump 10m into cold river water than warm pool water?

Question

Ive noticed this when I go cliff jumping. When I land it hurts more than at a pool.

-Water depth is deep; negligible

-Water temp in river is 9C

-Water temp in pool is about 28C

So does air solubility have anything to do with it? Or water density? Or is it just a placebo effect?

In: 2

Answer 1

Cold water is more viscous than warm, but I have no idea if the difference affects diving into it.