Do hot drinks cool you down in hot weather? Does drinking tea and coffee help in heatwave - science explained

A study from the University of Ottawa found that drinking a hot drink on a dry, warm day can help you stay cool

The UK is bracing itself for yet another heatwave, with the Met Office issuing a level 3 heat-health warning.

In July, the UK was rocked by the hottest day since records began with temperatures reaching highs of 41C.

This week could see temperatures soar to 35C in the UK, with the heat impacting The heat is impacting large parts of England.

Water companies have imposed hose pipe bans, whilst people are doing whatever they can to keep cool, from opening their attic to tin foiling their windows.

It’s important to stay hydrated, with many people reaching for iced drinks.

However, there is a common theory that drinking hot drinks during warm weather cools you down faster, but is that correct?

Here’s everything you need to know about drinking hot drinks in warm weather.

Londoners dine on the street in Hackey, London in a bid to keep cool (Pic: Getty Images)

Do hot drinks cool you down in hot weather?

There is a common belief that drinking hot drinks during a warm day will actually cool you down.

In 2012 researchers from the University of Ottawa confirmed that this theory was indeed correct.

Speaking to Smithsonian Magazine Ollie Jay, a researcher at University of Ottawa’s School of Human Kinetics explained that drinking a warm drink on a hot day can actually help cool your body temperature.

“If you drink a hot drink, it does result in a lower amount of heat stored inside your body, provided the additional sweat that’s produced when you drink the hot drink can evaporate.”

He added: “It’s commonly thought that the hot drinks raise your core temperature, but we found that that isn’t the case.”

What does the science say?

According to Jay’s paper published by the University of Ottawa’s School of Human Kinetics in 2012, drinking hot drinks on a warm day can indeed cool you down.

However, to experience the full benefits, the circumstances need to be just right.

When you drink a hot drink in warm weather, this causes you to sweat considerably more, meaning your body is putting out more sweat than it normally would be.

If the additional sweat can evaporate, then your body’s reaction to it will cool you down.

But, if your sweat can’t evaporate, you may be left feeling even hotter than before.

London has set up free refill stations across the city to help keep people hydrated during the heatwave (Pic: Getty Images)

Drinking a hot drink in warm weather works best in dry heat and is not advised for humid weather, where your sweat will saround.

It’s also important that you are wearing comfortable loose clothing that is made of natural fibres that will aid cooling.

If you drink a hot drink in the wrong type of warm weather, it could even end up being a bad thing.

Jay explains: “On a very hot and humid day, if you’re wearing a lot of clothing, or if you’re having so much sweat that it starts to drip on the ground and doesn’t evaporate from the skin’s surface, then drinking a hot drink is a bad thing.”

Adding: “The hot drink still does add a little heat to the body, so if the sweat’s not going to assist in evaporation, go for a cold drink.”