Why Are Seat Belts Damp on Rainy Days?

[CarsonLee]

Seat belts become damp on rainy days due to the following reasons: 1. Humid weather: On rainy days, the air is more humid than usual, and the temperature difference between the inside and outside of the car cabin is greater. When the car is parked and the windows are closed, the temperature inside the cabin gradually decreases until it matches the outside temperature. When the cabin temperature is higher than the outside temperature, warm air flows toward the car's metal body, forming condensed water droplets around it. Since the seat belts are close to the car body and connected to the cabin interior, they also accumulate water droplets, which adhere to the belts, making them feel cool. Therefore, it is normal for seat belts to feel slightly damp on rainy days. 2. Water leakage inside the car: If there are large amounts of water droplets on the seat belts during rainy weather, or even water can be squeezed out, it may indicate a leak in the roof area on either side of the cabin. During rainy weather, you can remove the decorative panel near the seat belt inside the cabin to inspect. If a leak is confirmed, repairs will be necessary.