My favorite month in Animal Crossing is December. I love how the villagers talk about Toy Day all month, because it makes it seem like a big deal. The snow and the lights on the pine trees are just perfect. And then it ends with the New Years countdown and fireworks. So I love just about everything about December
December, April, or November. December because of Toy Day; April because of cherry blossoms; and Novmeber because fall is my favorite season, and it's my birthday month.
If the Cherry blossoms lasted all month I would say April, but I guess I would say June because it's the beginning of summer, but all the annoying bugs haven't come out yet lol.
To be honest, August. As I had just started near the end of last July, the August Fireworks Shows, to me, marks progression in my town. It reminds me of the old days, when I was just concerned with making my town something to be proud of; an image of what I liked.
December because I started my town in it and remember those first early days were a lot of fun and exciting. The snowmen especially were cool and I love the trees with lights on, it made it seem really cosy.