Why do plastic and paper cups have so much more condensation, even indoors, during warm seasons?

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Think like a soda from McDonald’s or an iced coffee from Dunkin Donuts in the spring and summer. Even if you buy one and stay inside or quickly go inside where it’s air conditioned, the cup will always get “sweaty” and water condenses and gets everywhere.

This doesn’t happen during the cold seasons. Why does it occur even when you go where it’s climate controlled?

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3 Answers

Anonymous 0 Comments

Difference in temperature causes condensation.

Warm air holds more moisture than cold air (relative humidty)

In winter, the drink and the air temperature are much closer, and the moisture in the air (relative humidity ) is typically lower so less condensation.

In summer the temperature difference is much higher and there’s typically more moisture in the air allowing condensation to form.

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