Can a car cover be used in rainy weather?

2 Answers
JohnnyFitz
07/24/25 2:06pm
No. Car covers are not waterproof, so they should not be left on the car after rain. Once the weather clears, the cover should be removed to allow the car to dry. Precautions for using car covers: 1. Do not use a car cover immediately after parking: In summer, this can affect heat dissipation and reduce the lifespan of the cover. For example, aluminum-coated car covers have excellent heat insulation properties, but using them immediately after parking can trap heat inside the car. 2. When using in northern regions during winter: Applying the cover immediately after parking can lead to issues the next day, such as ice forming on the hood and sticking to the cover or pulling off the inner lining. This happens because the residual heat from the hood creates a temperature difference inside and outside the cover, causing moisture in the air to condense into droplets. 3. Avoid covering a wet car: Over time, watermarks can form and are difficult to remove. Typically, watermarks can only be polished out through car detailing. Additionally, prolonged moisture on the car's paint can accelerate oxidation, and trapped moisture under the cover makes it hard to evaporate, which can lead to rusting of internal components over time.
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CalvinLee
08/11/25 8:01am
Actually, it's not recommended to use a car cover on rainy days. Based on my experience in car protection, the main issue is that covering a wet car traps moisture, which can lead to mold growth or water stains. I once tried covering my car during light rain, and when I removed the cover, I noticed some stains and scratches on the roof. It took some polishing by a friend to fix it. It's best to use a car cover in dry weather, ensuring the car is completely dry before covering it. If you must cover your car in the rain, opt for professional waterproof covers made from materials like nylon or coated fabric, which can slightly resist water penetration. Additionally, regularly clean the car cover to prevent dust buildup, which can worsen friction and damage the paint during rainy days. In short, for the long-term shine of your beloved car, it's better to resist covering it in the rain or find a garage for shelter—it’s much more hassle-free.
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