In humid heat, it may be that sweat cannot evaporate from the skin’s surface as well.
Dr Jay added: “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.
“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.”
So based on the findings of this study, in some circumstances drinking a hot drink, such as tea, could help someone to cool down during a spell of hot weather.
But depending on the weather and circumstances, it may be better to drink a cold beverage instead.