I do drink a lot of water as it is much of a necessity considering the climate here. For most part of the year, the average temperature is over 30 degree Celsius. Even now, at night, the current temperature is 29 degree Celsius. Hence I drink around 6 liters of water on an average.
But on summer, the temperature crosses 45 degree Celsius, hence the quantity of water intake increases. I remember that when I was in school, I used to carry 3 liters of water in 3 separate bottles. And one of them gets finished before lunch break, the next one after sports, and last one till reaching the home !
I don't live in desert region like Middle-East or Mediterranean, hence nights are warm too. In summers, people do die here due to heat stroke, and Meteorological Department often issues red alert or orange alert in summer, as the air is also dry here due to lack of any river in the entire city.
So drinking water is must.