Numerology · Western astrology · Chinese zodiac
August 31 Birthday: Zodiac Sign, Personality and Numerology
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In Western astrology, an August 31 birthday falls in Virgo, in the first decan, with Mercury as the sign's ruler and Mercury as the decan's. In numerology the day gives birthday number 4. The Life Path also uses the birth year. Virgo is mutable and earth.
Key facts
| Sun sign | Virgo in every year from 1930 to 2030 |
|---|---|
| Decan | Virgo decan 1 (Mercury) |
| Sun's position at noon UTC | About 7° Virgo |
| Virgo · element · modality · ruler | Earth · Mutable · Mercury |
| Birthday number | 31 → 4 |
| Life Path by birth year | 1960: 1 · 1970: 2 · 1980: 3 · 1990: 4 · 2000: 5 · 2010: 6 · 2020: 7 |
| Chinese zodiac | After Lunar New Year, so the animal is the birth year's own |
| Born on this day | Tsai Ing-wen (1956), Maria Montessori (1870), Mohammed bin Salman Al Saud (1985) |
August 31 zodiac sign and personality
The final day of August pairs Virgo, seven degrees in, with 4, the number of order and steady effort. Mercury rules the decan, so organisation is practically a pastime. Interpretive astrology describes a meticulous, dependable builder of routines and systems. When balanced with rest and play, that diligence becomes one of the most quietly valuable gifts in the zodiac.
On August 31 the Sun usually sits at about 7° Virgo, in the first decan, where Mercury rules the decan as well as the sign. Mercury rules Virgo and also governs its opening decan, from about August 23 to September 2. Doubled Mercury in an earth sign points towards analysis, method and a talent for noticing the detail everyone else walked past. People with these birthdays are often called helpful, articulate and quietly witty, with high standards for their own work. The flip side is a busy mind that can turn on itself, cataloguing flaws long after the job is done. Their best gift tends to be useful precision: making a system clearer, a text tighter or a routine kinder to the people who follow it.
August 31 in numerology
Born on the 31st, your compound is 3 + 1 = 4. The 3 brings creativity and the 1 brings drive, and the 4 that results gives them a practical shape. People born on this day are often described as builders with imagination, able to design a plan and then see it through with steady effort. They tend to value loyalty and long-term commitment. In its supporting role, the 31 is traditionally associated with organising creative ideas into something lasting. Leaving room for spontaneity helps, since structure can harden into routine if nothing new is let in.
The Life Path, the main number in a numerology chart, also uses the birth year, so it changes from one August 31 birthday to the next: it is 1 for 1960, 2 for 1970, 3 for 1980 and 4 for 1990, for example.
Born on August 31: season, famous birthdays and Chinese zodiac
An August birthday falls in late northern summer, a season of early harvests and holidays, and in late winter for the southern hemisphere, when the first blossom starts to appear. Leo holds most of the month, with Virgo arriving around August 22 or 23. August is month 8 in numerology, associated with ambition, authority and material skill, a fitting partner for Leo's confidence. August 31 is the 243rd day of the year (244th in a leap year). By September 23, 23 days later, the Sun has usually moved on into Libra.
For the Chinese zodiac, Lunar New Year has always passed by August 31, so the animal is simply the one for the birth year. Well-known people born on August 31 include Tsai Ing-wen (1956), Maria Montessori (1870) and Mohammed bin Salman Al Saud (1985).
Read together
One tradition on its own gives a single angle. A Unified Reading puts your Life Path and name numbers, your Sun sign (plus Moon and rising when you know your birth time), your Chinese zodiac animal and your life stage side by side, and points out where they agree and where they pull apart. See how that looks in the fictional sample reading, or start with the free preview and pay $4.99 once only if you want the full reading.
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Frequently asked questions
What zodiac sign is August 31?
August 31 is Virgo in every year from 1930 to 2030, wherever you were born. It falls in the first decan of Virgo, which tradition links with Mercury.
What is the Life Path number for someone born on August 31?
It depends on the birth year. On August 31 the Life Path is 1 in 1960, 2 in 1970, 3 in 1980, 4 in 1990, 5 in 2000, 6 in 2010 and 7 in 2020. The birthday number, from the day alone, is 4 for everyone born on the 31st.
What Chinese zodiac sign is someone born on August 31?
Chinese astrology is straightforward for an August 31 birthday: the new year began weeks earlier, so the birth year's own animal applies.
Which famous people were born on August 31?
August 31 is also the birthday of Tsai Ing-wen (1956), Maria Montessori (1870) and Mohammed bin Salman Al Saud (1985). The list comes from Wikidata and favours people with the most Wikipedia articles.
Last updated October 23, 2026. Awaiting editorial review. Numerology and astrology are interpretive traditions for reflection, not predictions.