Why do you urinate less in hot weather than in cold weather using the knowledge of kidney function?

Answer 1

Because in the summer time, you sweat more, thus you are excreting certain fluids that would normally be counted toward urination. In other words, your pores are not as open during the winter, especially if you are outside.

Answer 2

In hot weather, the body needs to conserve water to prevent dehydration, so the kidneys reduce urine production by reabsorbing more water back into the body. In cold weather, the body does not need to conserve water as much, so the kidneys produce more urine to help regulate body temperature and remove waste products.