How much water should you drink a day in a heatwave?


Record temperatures have hit England, Scotland and Wales and pose a major health risk

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Drinking water allows your body to cool down through mechanisms like sweating (Picture: Getty Images)

So how much should you be drinking — and how do you find water near you?


Here’s what you need to know.

Why do we need to drink water?


Water is an important means of keeping the body hydrated.

For example, if you’re dehydrated, your body can’t regulate its temperature properly – which can be dangerous in hot weather.


How much water should you drink in a day?

When we say an average glass or cup is 250ml, that means you should be drinking around 1.5 to two liters (2.6 to 3.5 pints) of fluid per day.


These include low-fat milk, low-sugar or completely sugar-free drinks such as tea and coffee.

If you exercise or are in the middle of a heat wave, you need to increase your water intake as you are likely to lose more fluid than usual through sweat.


There is no perfect science as to how much water you should drink under these circumstances.

Healthcare provider Bupa suggests weighing yourself in the morning before a workout and weighing yourself again later after your workout to see how much weight you’ve lost.


By calculating the difference between the two numbers, you can see how much fluid you need to replace.

It is recommended to consume up to a liter and a half of fluids for every pound lost between cradles.


You can do the same if you have been exposed to high temperatures for a long time.

Workplaces and schools are required by law to provide water as needed (Image: Adobe)

You will know to drink more if you have any or all of the following symptoms:

  • feeling thirsty
  • Dark yellow and strong smelling urine
  • dizziness or lightheadedness
  • feeling tired
  • Dry mouth, lips and eyes
  • Urinate little and less than four times a day

How do you find water near you?

Most places that serve food and drink should be able to offer you a free glass of water if you ask for it.


However, they may charge you for using the glass or for their service.

Schools and workplaces are required by law to provide water, or at least make it easily accessible.


If you are traveling in a city, you can download the charge app Shows the shops in your area that offer, among other things, water bottles for refilling.