Hi
I went 2 years ago with my daughter for the last week in October
didn't expect to have summer type weather but was pleasantly suprised ............... we wee on the beach every day, she was in the Sea every day and I ventured in on 3 of the days ..... it was colder than July , obviously, but sea temps were about the same as we have experienced at the end of May / early June
I think we had a lucky week, but from what I was told, if it's not raining, its fine and if it's fine at that time of year it's still warm
We loved it and will do it again that time of year .......
However, November could be different again .... I guess because the week we went corresponded with UK half term , the place was a bit busier than in the mid of November ..... though I guess if your daughter is off at that time, some other schools will be as well , so it shouldn't be too empty