The Lion · July 23 – August 22
August 9 Zodiac Sign
Born on August 9, you're a Leo — ruled by the Sun itself — radiant, generous and born to create.
Zodiac sign
Element · Modality
Fire · Fixed
Decan (second)
Jupiter-ruled
Birthstone
Peridot
Birth flower
Gladiolus
Season position
Day 18 of 31
What astrology says about a August 9 birthday
August 9 is day 18 of Leo season, so astrologers link it with the sign's core character: generous, creative, confident, warm-hearted. Traits astrologers commonly associate with Leo include deep loyalty to friends and family; playful sense of fun that lifts the room; warm, generous and big-hearted.
A commonly cited growth area for Leo: a tendency to take over the spotlight. For the full picture of the sign, read the Leo guide.
2nd decan of Leo: Jupiter
Each sign is divided into three decans, 10° slices that the Sun crosses in about ten days each. August 9 falls in the second decan of Leo (about August 2–11), which the traditional Chaldean system assigns to Jupiter. Astrologers say that adds optimism, generosity and big-picture thinking.
Jupiter widens the sign's horizons, adding faith in the future, a generous streak and an appetite for growth, travel and learning.
The number 9 in numerology
The 9 is the number of completion. A 9th-of-the-month birthday is associated with compassion, idealism and a wish to leave things better than you found them.
Numerology is a separate tradition from astrology and is offered here for interest.
August birthstone and flower
The modern birthstone for August is Peridot and the commonly listed birth flower is the gladiolus. August falls in late summer in the north and late winter in the south.
Leo love and compatibility
Leo loves in technicolour. Romance for them is about devotion, admiration and a little theatre — date nights that feel like events, heartfelt compliments and a partner who is proud to be seen with them.
Astrology is a symbolic tradition, not a science, and interpretations vary between astrologers. This page is for reflection and entertainment, not prediction or advice.
Beyond your August 9 Sun sign
Your Leo Sun is one planet. Your Moon, Rising sign and the exact Jupiter-ruled decan details live in your full natal chart. Get yours free on Skygram.
Get my free birth chartAugust 9 birthday FAQ
What zodiac sign is August 9?
August 9 falls in Leo, which runs from July 23 to August 22 in the tropical zodiac. The Sun changes sign at a slightly different moment each year, so the boundary can fall a day or so either side of these dates. If you were born close to the edge, your birth year, time and place decide it.
Is August 9 a cusp birthday?
Not by the usual definition, which counts the first and last couple of days of a sign. August 9 is day 18 of Leo season, so it is normally read as a clear Leo birthday.
Which decan is August 9?
August 9 is in the second decan of Leo (August 2–11). In the traditional Chaldean system this decan is ruled by Jupiter, which astrologers say adds its own flavour to Leo. Some modern astrologers assign decan rulers by element instead, which gives different planets, and decans are strictly 10° slices of the zodiac, so the date range is approximate.
What are the birthstone and flower for August?
The modern birthstone for August is Peridot and the birth flower is the gladiolus. These come from calendar tradition rather than astrology, and the lists vary by country and source.