The amount of water a person needs to drink can vary based on a number of factors, such as their age, weight, gender, level of physical activity, and the climate they live in. However, as a general rule of thumb, it is recommended that adults drink at least 8-10 glasses (or approximately 2-2.5 liters) of water per day, regardless of the season.
In the summer, when temperatures are hotter and people tend to perspire more, it is even more important to stay hydrated. It is recommended that people increase their water intake to 10-12 glasses (or approximately 2.5-3 liters) of water per day during the summer months. Additionally, it's a good idea to drink water before, during, and after any physical activity to replenish fluids lost through sweating