October is a nice time of the year to go out, because it is not too hot nor too cold. Many locals go out to the park and enjoy the comfortable season.
Also, October is the time of autumn festivals. Some famous festivals are in October, such as Kawagoe Matsuri in Kawagoe is in mid-October, Sawara Festival in Chiba Prefecture is in early October, Ikegami Honmonji Temple autumn festival. Check out the schedule on next year and consider participating in one of the festivals at temples or shrines!