The speed of sound in a given medium, such as air or water, is primarily determined by the properties of that medium, including temperature, humidity, and composition. These factors can vary throughout the day, leading to slight variations in the speed of sound. However, the changes are usually minimal and may not be noticeable to the human ear.
Temperature is one of the key factors influencing the speed of sound. In general, as the temperature increases, the speed of sound also increases. During the day, especially in sunny weather, the air temperature tends to be higher compared to nighttime. Consequently, the speed of sound may be slightly faster during the day compared to the nighttime.
Humidity can also affect the speed of sound, although its influence is typically smaller than that of temperature. Moist air tends to have a slightly lower speed of sound compared to dry air at the same temperature.
It's important to note that the speed of sound variations due to daily changes in temperature and humidity are generally small and not easily perceptible to human hearing. They are more significant in scientific measurements or engineering calculations that require high precision.
In summary, while the speed of sound can be influenced by factors such as temperature and humidity, the variations throughout the day are usually minor and unlikely to be noticeable to the average person.