But the effect on your personality may go beyond this [0]:
> The season in which babies are born can have a dramatic effect on their future risk relating to the development of conditions such as neurological disorders, including seasonal affective disorder, bipolar depression, schizophrenia and type I diabetes. Research has shown that the season a baby is born in can have a major effect on whether or not they will become a heavy smoker.
> The risk of suicide increases by 17% for people born in the spring–early summer compared with those born in the autumn–early winter
Our daughter sleeps better and longer in winter, because it gets dark early - so her birth month correlates with the amount of sleep she got in certain stages of development during the last years.
In past ages, the birth month also directly influenced how much (and what kind of) food was available in certain stages of development.
This may sound esoteric, but I really think there is some deep truth in attributing personality traits to astrological signs.
[0] https://en.wikipedia.org/wiki/Influence_of_seasonal_birth_in...