In synastry, the house the Moon is in will show the area of life that someone touches another on a deep and personal level.
Just as the Sun is the Luminary of the day, the Moon is the Luminary of the night.
It is commonly thought that the Moon governs emotions and intuition, and it does. It also governs much, much more, however. The Sun shows who we are, and the Moon shows what we do.
The Sun is the King or Queen of the chart, whereas the Moon is the Prime Minister. The Moon governs all of the day to day activities of our lives.
The area in our chart that is touched by the Moon of another person is the area where we are the most exposed. This is where the other can influence us the most strongly, which can be either positive or negative.
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Moon in 1st House Synastry
If someone’s Moon is in your 1st House, there is a strong potential that the two of you will develop a deep, emotional bond very quickly.
You will feel safe around this person, and they will warm to you almost instantly.
This instant bond may or may not have long-term potential. Much will depend on the synastry aspects between the charts.
While this aspect will make both people vulnerable, the person whose 1st House is impacted is the one who is most likely to be hurt if the relationship does not last.
There is a real risk of that person developing a dependency on the other person if they are not careful.
Moon in 2nd House Synastry
If someone’s Moon is in your 2nd House, this person can have a profound impact on your sense of security and on your self-confidence.
This person will be able build you up or tear you down. The nature of your relationship and the synastry aspects between your charts will give clues to whether the impact will be mostly positive or mostly negative.
There is the risk of dependence with this placement. It will be tempting to rely on someone whose Moon is in your 2nd House, particularly when it comes to material and financial matters.
Moon in 3rd House Synastry
This is a nice placement for the Moon in general. The Moon likes to be in the 3rd House. This is true in a birth chart, and it also extends to synastry.
This placement will aid in communication. It will be easy to talk to someone whose Moon is in your 3rd House.
This person will feel familiar to you, even in the early stages of a relationship. You will have the sense that you have known the person all of your life.
Even though this person feels familiar, this placement creates less vulnerability than some other placements do. The relationship tends to be playful and lighthearted.
Moon in 4th House Synastry
Someone whose Moon is in your 4th House touches you on a very deep level. You will want to talk to them about your past and your childhood.
This means that you can be quite vulnerable to this person if you are not careful.
This is a really good placement for someone that you want to settle down with. There will be a natural desire to nest and make a home together.
On the other hand, you may not be at your best with this person. Your childhood issues will naturally come to the surface when you are together.
Moon in 5th House Synastry
If someone’s Moon is in your 5th House, they will bring out your creativity and your playful side.
You may feel childlike when you are with this person, but it will be in a good way. This person will bring out your innocence and sense of wonder.
You will enjoy being with this person, and you will tend to trust them almost instantaneously.
Even so, unlike other Moon House placements in synastry, this one does not generally lead to a feeling of dependency. The 5th House tends to be light and joyful.
This has a protective effect, making this placement relatively safe.
Moon in 6th House Synastry
Unlikely other planetary placements in this house, the Moon in the 6th House is not necessarily negative.
It can actually be positive, especially in a long-term relationship or a marriage. This is someone who can care for you if you are sick or are in difficulty.
This is someone that you can go to when you are struggling in some way.
If your Moon is in someone’s 6th House, you may have to be careful to make sure that your needs are being met in the relationship, however.
Moon in 7th House Synastry
The Moon in the 7th House in synastry is a mixed placement. On the one hand, this person will naturally complement your strengths and weaknesses.
On the other hand, there will be some real differences between you, and you may not get along, especially at first.
The 7th House is considered the House of Marriage. It also signifies business partners, client relationships, and open enemies.
It will be hard to feel neutral about someone whose Moon is in your 7th House. You will either gravitate to them instantly, or you will feel strong antipathy for them. Sometimes, both feelings will be present at the same time.
Moon in 8th House Synastry
The 8th House is the place of your deepest, darkest secrets. If someone’s Moon is in your 8th House, it will be easy for them to gain access to these secrets.
This can be a double-edged sword depending on the character of the other person and the nature of your relationship.
This is not necessarily a negative placement, and it might proceed slowly. Still, you want to be careful with this person.
It generally is a bad idea to lie to someone whose Moon is in your 8th House, even if they are only little, white lies. This person will be able to see through you, for better or for worse.
Moon in 9th House Synastry
This is someone who will expand your horizons and help you to try new things. If you are shy, this person will challenge you to come out of your shell a bit.
If you are naturally adventurous, this person will encourage you to expand on this trait.
Among other things, the Moon governs food. This may be someone who gets you to try new restaurants or food that you are unfamiliar with.
This person is also someone you can talk to about intellectual or spiritual matters. They may also encourage you to go back to school.
Moon in 10th House Synastry
The most natural meaning of the Moon in the 10th House in synastry is that this person will nurture your career or public standing.
In synastry, any planetary placement in your 10th House can indicate a mentor of some kind, but this takes on a different flavor with the Moon.
In a natal chart, the Moon is said to indicate one’s mother, but it can also indicate any parental figure.
When it comes to houses, the 4th and the 10th Houses signify ones mother and father. There is some disagreement as to which house signifies which parent, however.
In any case, someone whose Moon is in your 10th House will often take on a parental role with you as they are helping you advance your career.
Moon in 11th House Synastry
If someone’s Moon is in your 11th House, the nature of your relationship will usually have a strong element of friendship to it.
This is your natural ally, who will help you achieve your goals and wishes.
Each house has some similarities to its opposite house, and the house that is opposite the 11th is the 5th. The Moon in either of these houses can signify a strong friendship.
The nature of the friendship is different, however. The Moon in the 5th House will indicate a friendship with the flavor of a childhood playmate.
The Moon in the 11th House will signify a more grown-up type of friendship characterized by mutual support.
Moon in 12th House Synastry
A relationship with someone whose Moon is in your 12th House may not comfortable one. This person can see the secrets that you hide even from yourself.
We all have blind spots. Astrologically, these blind spots are represented by the 12th House.
The 12th House is known as the House of Self-Undoing, and someone whose Moon is there can trigger our lives to unravel.
One the other hand, this person can be the source of tremendous healing, change, and spiritual growth in the right circumstances.