Why does the rate of rusting become fast in rainy season?

The rate of rusting increases during the rainy season due to higher humidity and the presence of water, which are essential for the electrochemical reactions that cause rust. Water acts as an electrolyte, facilitating the transfer of electrons between iron and oxygen. Additionally, rain can wash away protective coatings and introduce salts and pollutants, further accelerating the corrosion process. The combination of moisture and contaminants creates an ideal environment for rust formation.