September is a beautiful month, the crisper weather turns the trees a lovely shade of gold. If you adopt a new kitty in September, you could give him or her a name inspired by September. Sapphire is the birthstone of September, and the Aster is the birth flower for the month. If you are looking for more September cat names for your kittens, check out our collection at the below list and select your favorite names for your boy or girl kittens.