People prefer to wear cotton clothes in summer season. This is due to the fact that cotton clothes are-

People prefer wearing cotton clothes in summer primarily because cotton is a natural fiber with excellent hygroscopic properties, meaning it has a high capacity to absorb moisture. During summer, the human body produces sweat as a thermoregulatory mechanism. Cotton effectively absorbs this sweat from the skin. Once absorbed, the moisture is exposed to the air, facilitating evaporation. This evaporative process consumes latent heat from the body, resulting in a cooling effect [1]. Furthermore, cotton's porous structure allows for high air permeability and breathability, which prevents heat from being trapped against the skin. While other fabrics like flax may have higher heat conduction, cotton's superior ability to manage wetness and its soft, non-irritating nature make it the standard choice for comfort in hot weather [2].

Sources

1. [1] https://www.sciencedirect.com/science/article/abs/pii/S1385894724072206
2. [2] https://www.sciencedirect.com/science/article/abs/pii/S030645651630434X