Sound is a form of energy that travels in waves. These waves can be influenced by various factors such as air temperature, humidity, and wind direction. Generally, sound waves travel in a straight line unless acted upon by these or other variables. The speed, direction, and volume of sound can change as it interacts with different mediums like air, water, and solid structures.

Raindrops themselves produce sound, contributing to the overall noise level. The impact of raindrops on surfaces—be it the ground, a roof, or a car—creates a layer of ‘white noise.’ This noise elevates the baseline ambient sound level, making other noises, like passing vehicles, seem louder in comparison.

Sound waves are absorbed by surfaces they come into contact with; this includes the ground. During dry conditions, soil, grass, and other elements act as natural sound absorbers. When it rains, these surfaces become less porous, reducing their ability to absorb sound. As a result, more sound waves bounce back into the environment, creating a heightened level of noise.

If you’re looking to mitigate the impact of increased traffic noise during rain, soundproof windows offer an excellent solution. These windows can significantly minimise external noise, providing a quieter, more comfortable indoor environment regardless of the weather conditions outside.

The perception of increased traffic noise during rain is a multifaceted phenomenon influenced by acoustics, environmental factors, and psychology. Understanding these factors not only satiates our curiosity but also informs us about potential soundproofing solutions. Whether it’s the unique propagation of sound waves, the reduced ability of the ground to absorb them, atmospheric conditions, or the stickiness between wet roads and tires, each factor plays a part in how we experience noise during a rainy day.