Mars in the 3rd House: Meaning by Rising Sign
The short answer
With whole-sign houses, Mars is in your 3rd house when it is in the sign 2 signs on from your rising sign: Mars in Gemini for Aries rising, Mars in Sagittarius for Libra rising, and so on for all twelve rising signs.
What Mars in the 3rd house means
Mars describes your drive, and where you're willing to push. In the 3rd house of conversation and the everyday, that plays out through conversations, messages, short trips, siblings and neighbours.
The 3rd is a cadent house, where planets work more quietly, through thinking, routine and adjustment. Its natural sign is Gemini, so Mars here takes on some of Gemini's concerns whatever sign it is actually in.
With whole-sign houses, Mars sits in your 3rd house when it is in the sign 2 signs on from your rising sign: for Aries rising that means Mars in Gemini. A transit of Mars through one house lasts about 2 months, because that is how long Mars usually stays in one sign.
Which sign puts Mars in your 3rd house
Find your rising sign in the left column. If your Mars is in the sign beside it, your Mars is in the 3rd house.
| Your rising sign | Mars in the 3rd house |
|---|---|
| Aries rising | Mars in Gemini |
| Taurus rising | Mars in Cancer |
| Gemini rising | Mars in Leo |
| Cancer rising | Mars in Virgo |
| Leo rising | Mars in Libra |
| Virgo rising | Mars in Scorpio |
| Libra rising | Mars in Sagittarius |
| Scorpio rising | Mars in Capricorn |
| Sagittarius rising | Mars in Aquarius |
| Capricorn rising | Mars in Pisces |
| Aquarius rising | Mars in Aries |
| Pisces rising | Mars in Taurus |
How long a Mars transit of the 3rd house lasts
Mars stays in one sign for about 2 months on average, so a transit of Mars through your 3rd house lasts about that long: as little as about 38 days and as much as about 8 months across the charted years.
About the 3rd house
The 3rd house of conversation and the everyday: conversations, messages, short trips, siblings and neighbours. Its natural sign is Gemini.
How the houses are counted
Houses here use whole-sign counting: your rising sign is the whole 1st house, the next sign the 2nd, and so on around the zodiac. Many astrologers use Placidus or another quadrant system instead, which can move a planet close to a sign boundary into the neighbouring house. Either way you need an accurate birth time, because the rising sign changes about every two hours.
Mars in the other houses
Mars in the 1st house · Mars in the 2nd house · Mars in the 4th house · Mars in the 5th house · Mars in the 6th house · Mars in the 7th house · Mars in the 8th house · Mars in the 9th house · Mars in the 10th house · Mars in the 11th house · Mars in the 12th house
Other planets in the 3rd house: Sun · Moon · Mercury · Venus · Jupiter · Saturn · Uranus · Neptune · Pluto
Is your Mars in the 3rd house? Vera reads it with the rest of your chart.
House placements need a birth time. Vera casts your chart from your birth details and reads your Mars in its real house, sign and aspects.