Diamond Shape
One of the most traditional kite forms, it has been in use in China since at least 200 B.C. The form flies well at altitudes of 200 to 400 feet in light to moderate winds. The sail is usually made from paper or silk because of the light-weight nature and strength of these materials; modern kite makers also use nylon.
Wind
The diamond kite flies best in light to moderate winds with few gusts. Wind moving at four to seven mph makes leaves on trees rustle and is the bottom range for diamond kite flying. At eight to 12 mph, small flags wave in the breeze and the diamond kite will fly well. Thirteen to 18 mph is the high end for diamond kite flying and causes tree limbs to sway. Wind speeds above 18 mph can cause the kite to be unstable and fail to remain airborne or tear the kite.
Danger
It is not safe to fly kites in inclement weather, especially if there is thunder or lightning. Kites can act as lightning rods and become dangerous for the flier. A kite should never be flown near power lines or telephone lines to avoid the risk of electrocution. Children and small adults can be pulled off their feet by a kite caught in a strong draft, which can lead to injury.