DH said September, BUT I heard that it is still to hot then. SOooo, I'm thinking the second week of November? I just want to be able to see the Christmas decorations and Osborne Lights. Not much into Halloween decos. November average high is 79--perfect! He said as long as it's warm enough to swim and not freeze when you get out..lol. For all of you who have travelled during these months, which would be better?