It's similar, but hotter than September. And from what I can remember, there were more regular, afternoon rain storms. We've had September trips when there have been afternoon showers, and then others when there haven't been. Our August holidays, however, had showers every day around 3pm. They tend to come with some pretty spectacular lightning storms too!
Will never forget out trip to Universal! We had walked from Wet 'n' Wild over to Universal, and it was absolutely baking, full sun, everything. By the time we had gone up the stairs, along the moving platforms and into the area between both parks, the storm clouds came in and the heavens just opened! We went inside a shop next to the cinema, and watched and the wind, rain, and lightning came down. The tables and chairs that were outside, all got blown over, the umbrellas flying up to the moving walkway! The rain was so heavy and fast, that it was getting closer to the shop doorway by the minute!
The thunder cracks were deafening, and there were some pretty fork lightning streaking out of the sky (which I hate - I don't like fork lightning, as I'm scared it's gonna get me and set fire to the building I happen to be in!) Anyway, about 10-15mins later, it stopped just as quickly as it came. The water receded, although there were lots of puddles everywhere. I hadn't discovered the joys of
Crocs, so actually spent the first part of the afternoon wondering around Universal without any shoes on *** they were soaked through