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Could Babies Born In Winter Develop Faster?

The season in which your baby’s born could influence his motor development during his first year – and get him moving quicker, say researchers

A study revealed that winter babies born between December and May start crawling a month earlier than babies born in the summer, between June and November.

In the study, conducted by the University of Haifa in Israel, 47 healthy babies were divided into two groups depending on whether they were summer or winter born babies. The researchers used the Alberta Infant Motor Scales (AIMS) to follow the babies’ development. They tracked four positions – prone (on the stomach), supine (on the back), sitting and standing.


Each baby’s motor development was looked at when they were seven months old, and a follow-up session was carried out when they began to crawl – which typically happened at 31 weeks. Parents were also asked to keep track of their babies’ development before and between the observations.


The study showed that, on average, babies born in the winter started to crawl at 30 weeks, while the children born in the summer started crawling at 35 weeks. And the overall AIMS score was higher for babies born in the winter but there was no huge difference in the difference in sitting or standing between the two groups of babies.

The researchers noted that the geographic location and the local climate could have an impact on a baby’s development.


‘Although the winter in Israel is comparatively mild compared to other places in the world, it turns out that it nonetheless influences the motor development of babies because of the differences between summer and winter in Israel,’ the researchers say. ‘The season influences the babies' experiences in a number of ways, including layers of clothing that are worn, the opportunities babies are given to spend on the floor on their stomachs, and the hours of activity and daylight.’

How old was your baby when he started crawling? Let us know in the comments box below.

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