"Hydration" is important for everyone's health. Perhaps even more for you, because you live in a hot country.
After my diabetes diagnosis, I knew that I was not drinking enough water so I forced myself to do it even though I am not thirsty. This is especially important before, during, and after exercise (I think you said in another thread that you do some running?).
Water is boring, so I make it a bit more exciting by buying fizzy mineral water and sometimes adding some lemon juice (squeezed from a real lemon). I drink about one liter of fizzy water, and one liter of tap water, every day. This is between meals. I also drink fluids with my meals -- water or wine. (The fizzy water is expensive if you buy one bottle, but cheap if you buy it by the case.)
I started doing this "frequent hydration" after passing a "kidney stone" a few months ago. This is really, really painful! Apparently just as painful as when a woman is having a baby! The doctors told me I should "hydrate more" to reduce the risk that this will happen again in the future.