October is nice it's not a big holiday except for Halloween but we don't take school vacation for it. It's nice and cool That month. November till the beginning of January is busy because of the holidays. January thru March is the rainy season and then this March Easter aka Spring vacation comes early. April and May it starts to warm up. In June you have the Graduates going for there grad nights and school nights. June till the beginning of september it will be busy because everyone is summer vacation and it is hot. Usually high 90's for Orange county. So as for the best month to go I would say September and October. It cools down and every one is back in school. Go on a week day is best also as the rest of us locals know. Good luck!