It is always better to wash your car out of the direct sun. You don’t want the soap, wax, or whatever else you are cleaning your car with to dry on before you are even complete! Plus if you let the water droplets dry before wiping them off they tend to leave spots on your car. So if you wash your car either at night or in the shade you have the chance to dry your car completely with a dry lint-free rag, before the sun has a chance to do it. If you are washing yout car at home, it is always advisable to wash your car during day time due to the presence of warm temperature in an atmosphere that helps to humidify the water from the apartment car wash and provide a better shining effect, although it is advisable to wipe clean the car’s surface after washing. During night time you must wipe clean the car’s surface after washing or else there would water spots clearly present over the car’s surface.