Average weight for a 160cm tall boy that is 13?

According to the World Health Organization (WHO), the average weight for a 13-year-old boy who is 160cm tall is 45.7kg. However, it's important to note that this is just an average and there can be a wide range of normal weights for boys of this age and height. Factors such as genetics, diet, and physical activity can all affect a person's weight. If you're concerned about your son's weight, it's best to talk to a healthcare professional.