A one-month-old baby typically weighs around the following averages:
- Baby boys: approximately 4.2 to 4.4 kg (9.3 to 9.7 lbs)
- Baby girls: approximately 4.0 to 4.2 kg (8.8 to 9.3 lbs)
According to the World Health Organization (WHO) growth charts and UK data, the 50th percentile weight for a 1-month-old boy is about 4.4 kg (9.7 lbs), and for a girl about 4.2 kg (9.3 lbs)
. Other sources report similar averages, with boys around 4.2 kg (9.3 lbs) and girls around 4.5 kg (9.9 lbs)
. It's important to note that individual babies vary, and steady weight gain along their growth percentile is the key indicator of healthy development rather than hitting an exact number
. If there are concerns about weight, consulting a pediatrician or health visitor is recommended. In summary, a typical 1-month-old baby weighs roughly between 4.0 and 4.5 kg (8.8 to 10 lbs), with boys tending to be slightly heavier than girls on average
