How to Deal with Foggy Car Windows on Rainy Summer Days?

[DiWillow]

When encountering foggy windows while driving in the rain, the best method for car owners to master is using the air conditioning system to defog. Then adjust the fan speed to the maximum. Next, set the temperature to the lowest, and the fog on the windows will disappear shortly.

[VanPaisley]

I've encountered the issue of foggy car windows during summer rains several times. It usually happens because the temperature drops during rainy weather, and the moisture from passengers' breathing condenses when it meets the cold glass. My approach is to first start the engine and turn on the air conditioning, then locate the defogging button—typically marked with a windshield icon. Pressing it will adjust the air flow and temperature to quickly dry the glass. Remember to lower the temperature and switch to external circulation mode to reduce humidity inside the car. If the fog is light, I slightly open the window for air circulation, but during heavy rain when windows can't be opened, relying on the air conditioning is sufficient. I always keep a clean cloth or special anti-fog spray handy for emergencies—a few wipes ensure safety without obstructing the driving view. Maintaining a dry interior is crucial, so I regularly check door seals in summer to prevent rainwater seepage that could increase humidity.

[LeAnnie]

It's quite annoying when car windows fog up on rainy days in summer. I usually start the car quickly, activate the defogging system, turn on the AC cooling, set the fan to maximum speed, and lower the temperature. This quickly removes moisture from the glass, making it clear for safe driving. I always keep a defogging spray in the car, which works well for prevention when applied. Pay attention to switching between internal and external air circulation—using external circulation to introduce dry air works better when fogging occurs. Before long trips, I check if the air filter is clogged to avoid reduced effectiveness. Experience tells me not to open windows for ventilation because letting rain in makes it worse—just learn to use the car's built-in defogging function properly. Make it a habit to check the weather and prepare every time you get in the car to avoid panicking.

[VanIsabella]

Fogging on the interior windows often occurs during summer rains, and I immediately pull over to ensure safety. I turn on the air conditioning and press the defog button, with the fan speed and temperature control automatically optimized for defogging. Keeping the AC on with cold air provides effective drying, while the external circulation mode reduces moisture buildup inside the car. As preventive measures, I regularly clean the inside of the windows and maintain the air conditioning system to prevent dust clogging from affecting performance. Safety first—never wipe the windows while driving.