Moon in the third house is a rather difficult placement for the Moon, though it can be very positive as well. It shows that moods and feelings cloud your decision-making.
Because moods change, you may find yourself regretting your decisions. If the Moon has a negative aspect with Mars, this shows that you make decisions impulsively and then later realize they were wrong.
Your moods influence your opinions about people and situations, so it’s hard to see them for what they are. Very often, the Moon in the third house signifies a person who likes to live in fantasies. People as such can daydream the whole day.
THE MOON IN THE THIRD HOUSE: AN ABUNDANCE OF COMMUNICATION
You may be known for your wordiness. There could be a tendency to talk about things that do not really matter. You like changes – you thrive on them. Your life will be full of changes.
Also, your moods can cause changes in your life. You dislike routine, and cannot stick to some monotonous activity for long.
You may be excellent at picking up on trends, and you may feel the movement of the mass-mind. By that I mean that you may be able to predict what will be trendy, and what will go out of trend.
AN ABUNDANCE OF INTERESTS
You have many interests and you love learning, though it could be difficult to stick with one subject for long.
Your feelings and emotions decide how you express yourself. You are likely to be busy in your area, making many short trips. A job requiring such busyness would be excellent for you. For example, a job involving driving to different places, making domestic trips, delivering or sending items, and communicating with all kinds of people.
You will experience many changes not only in your immediate environment, but in your beliefs and opinions. You may also find yourself changing preferences about whom you like to talk to.
THE MOON IN THE THIRD HOUSE: LEARNING THINGS QUICKLY
One of the best points of the Moon in the third house is that you learn things very quickly. All you need is to be really interested in the subject. Then you can learn it much faster than most people.
You may also have the talent of mimicking other people, which makes you a natural actor. You can naturally copy the behavior or communication quirks of others, so you are a natural entertainer.
Another excellent quality that this placement can signify is a great artistic ability. You may have some sort of natural talent, be it painting, singing, dancing, or any other.
HOME AND SIBLINGS
You may have a sister or siblings with feminine qualities. For example, they may be emotional, intuitive, sensitive, or ruled by the moods. The Moon in the third house may signify that you are a very welcoming person, who likes to invite people to your home.
Your home, therefore, could be a meeting place of neighbors, where they also are welcomed with food. You should be great at organizing all sorts of gatherings and events, and entertaining your guests. You may have a natural tendency towards caring for people to the point of mothering them.
Read about the Moon in the first and second houses.