10 Amazing Facts of People Born In September

If you were born in September, this page collects what is actually known about the month – the two star signs it spans, its birthstone and birth flower, where its name comes from, and who else shares it. It also looks honestly at whether a birth month predicts anything about a person, because that is the question most people arrive with.

September at a Glance

Notable People Born in September

What the Astrological Tradition Says

Set out below as tradition rather than as fact. These associations come from Western astrology, which is a system of symbolism with a long cultural history and no demonstrated predictive power. Read them the way you would read any folklore.

Virgo (1-22 September)

The tradition associates Virgo with being analytical, precise, practical, inclined to worry about detail. Whether any of that describes you is something only you can judge, and the section below explains why it will tend to feel accurate either way.

Libra (23-30 September)

The tradition associates Libra with being sociable, diplomatic, aesthetically minded, slow to decide. Whether any of that describes you is something only you can judge, and the section below explains why it will tend to feel accurate either way.

Does Your Birth Month Actually Affect Anything?

It is worth separating two very different claims. The first is that your birth month shapes your personality. That is the claim astrology makes, and when it has been tested under controlled conditions – where neither the participant nor the assessor knows which sign is which – it has not held up. People reliably recognise themselves in a description written for any sign, an effect documented since Bertram Forer’s classroom experiment in 1948.

The second claim is narrower and better supported. Where a system sorts people by a fixed annual cut-off date, those born just after the cut-off are the oldest in their cohort and are consistently over-represented at elite levels. This is the relative age effect, first documented in Canadian junior ice hockey in the 1980s and since found in football, cricket and school attainment data in many countries. Note what it is: an artefact of where the administrative line is drawn, not a property of the month. Move the cut-off and the advantage moves with it.

There is also genuine epidemiological research into seasonality of birth and certain health outcomes, though effect sizes are small and confounded by geography, latitude and maternal nutrition. None of it supports personality prediction.

Frequently Asked Questions

Which star sign is September?

September covers two: Virgo from 1-22 September and Libra from 23-30 September.

What is the birthstone for September?

Sapphire.

What is the birth flower for September?

Aster and Morning Glory.

Do people born in the same month share a personality?

There is no good evidence that they do. The one reliable birth-date effect is the relative age effect, which comes from where a school or sporting year draws its cut-off rather than from the month itself.

Born in a Different Month?

• People born in January
• People born in February
• People born in March
• People born in April
• People born in May
• People born in June
• People born in July
• People born in August
• People born in October
• People born in November
• People born in December

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