Choose the right fabric: Select a light-colored fabric that is made of natural fibers such as cotton, linen or silk. These fabrics allow for better air circulation and are more breathable than synthetic materials. Use blackout curtains: If you want to keep your room cool during the day, use blackout curtains to block out the sun's rays. This will keep your room cooler and prevent heat from entering. Close curtains during the day: Keep your curtains closed during the day to prevent the sun's heat from entering your room. This will help keep your room cool and comfortable. Open curtains at night: Open your curtains at night to allow cool air to enter your room. This will help circulate air and cool down your room. Use curtains to create shade: Hang curtains outside your windows to create shade and prevent direct sunlight from entering your home. By following these tips, you can use curtains to beat the heat and create a more comfortable living space during hot weather.