i think it matters for what they prefer. but i think they would want to swim in cooler water because it feels better to swim in cold. like i mean when your swimming hard it feels good.
Olympic swimmers could not swim fast in warm water especially for the longer distance races as they would soon overheat themselves. I don't know the exact tempratures but the water would have to be under body heat.
most swimmers prefer colder water because not only does warmer water make swimmers drowsy but it also heats the swimmers up, making it very uncomfortable to swim long distances. Cold water, because of its coldness is refreshing and also gives the body a jump start. It's proven to have made swimmers faster.
Well what ever the outdoor temp is say its 28 degrees outside it has to be 30 inside the centre and than add 1-2 degrees on to that so 31-32degrees will b in the pool. 28-33 degrees is the norm. Believe it or not coming from a national/world champion swimmer we do train in different pool temps to get the blood pumping. warmer water is normal for sprints and the normal 28-33 degrees is training and sprints. but normally its in the 28-33 degree pool
Water evaporates faster on a warmer day
Water would be slightly cooler due to the cold air
There is no real answer for this... it's a 'man thing'.
Danios normally live in warmer water but are also excellent swimmers in cold water
Its typically cooler outside at night, so the temperature in water sems warmer in comparison
It is very hard to change the temperature of the water. The water would be cooler in the summer than the land, since the sun doesn't effect it that much and it's warmer in the winter since the cold doesn't change it that much.
to keep the properties of water which that the cooler water go up and the warmer go down
the warmer water vapour touches the inner cooler surface , loses heat and condense into water droplet
Yes, cooler water will have a slower development that warmer water.