It could also be that you are not used to it. I have periods where I don’t drink much and then I am not thirsty. As soon as I force myself to drink more I also feel thirsty more. If you are not used to drinking it’s also easy to confuse being thirsty with being hungry.
I used to be like this. Rarely drank water actually, mostly drank soda. Moved to Arizona, even in the winter I _always_ carry a large water bottle around with me. I don't keep track, but I'd be willing to bet I drink a fair amount over 8x8 without thinking about it. Climate, anecdotally, plays a large part, which makes sense to me.
Me and my sister are similar. There used to be a time when my only water intake was 1.black coffee in the morning. 2. green tea in the evening. I have had to consciously create a habit of drinking more. My current metric ( to avoid kidney problems ) is to keep the pee as white as possible ( I have no scientific backing for this ).
edit: There you go, Causality's comments says otherwise about the urine.
Better have clear urine than dehydration though. You have to try really hard before drinking too much water becomes a problem.
> keep the pee as white as possible
That's a symptom of overhydration. Pee should be yellow, as everybody knows.
If we spent a night at a bar how many drinks would you have? Might not apply to you but I've spoken to many people that think it's hard to drink 3L of water but will happily not back 6 pints (500ml) in an afternoon.
If you're getting a lot of water from your diet (e.g. fruits), you're probably less thirsty than someone who eats a lot of dry sugary/salty foods.