And the August weather thing. We have been twice in August, once in June. Not much difference TBH in both.
It is hot, very hot. And it is humid. However much of the park queues are shaded, indoors or have water spray fans. I find hot wetaher hard, but I manage no problem once I have a hat and sunglasses on.
There is rain. It is heavy, but it is generally shortlived (about 30-60 min max we found) You know it is coming - clouds over, a breeze picks up. The rain is also warm if you do get caught in it. Tends to be mid to late afternoon around 4pm. Ideally, you head for a cafe or indoor show at this time.
This year is rained about 7 out of 14 days, but very short lived. Two days it rained longer, but we just went from indoor show to cafe, no problem.
It is also hurricane season. This year there were none. One year we had a hurricane (2004) when there. The park closed at 2pm, and was reopened by 10am the next day, all rides functioning. We just headed home in the rains (was in a villa that year) and enjoyed some relaxing time in the villa. Affected one afternoon/evening out of 14 days there.
School holidays are our only option as I won;t take DD out of school. Besides I work term time now anyway. So really August is out only option. But the weather has never been a problem for us.