we nearly always go in November, its by far our most fav time to go.
The weather is imo perfect. In general its blue sky and normally upper 70's to mid 80's in old money and no humidity. It depends when you go, but we have never felt the need for long sleeves around the first couple of weeks of November but yes it can get chilly going towards the latter half. I think we have prob been about 13 times in November and have always found it hot enough to go swimming during the day and tend to just 'brave' it first thing or last thing

There is just so much going on at this time of the year...love it.