You might be tempted to wash your car in sunny and hot weather, but cloudy, less-warm days are best. This is because in between steps, the sun will dry your car before you’ve even had a chance to rinse or dry it, leaving pesky watermarks on your paintwork.
It’s also worth bearing in mind that heat can reduce the effectiveness and ease of use of some cleaning products. In particular, car wax can set hard very quickly in warm weather, so you’ll need to work fast, panel by panel, to avoid this and get the best results.
If you can’t avoid cleaning on a hot day, try to do it early in the morning or in the evening, and keep your car in the shade as best as you can to achieve that coveted showroom shine.
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