In the United States as of 2014, August is the most popular month for birthdays. In Northern Europe, March to May statistically produces the highest number of births.
Birth rates can be affected by the seasons. Temperature and light may possibly influence the months of procreation. Women in northern latitudes conceive more successfully in the autumn, whereas farther south, it is in the winter. Countries in the southern hemisphere do not record births efficiently enough to analyze for comparison. Other more modern factors, such as protected sex and abortion rates, may also impact the statistics of births, throwing a false light on which month is the most popular for birthdays.