I've never been in October, but I wanted to reiterate...
WEAR YOUR SUNSCREEN!!!!!
We went in Dec 2000, and I received on of the worst burns that I have ever had! I was litterally the colour of a tomato and I had sunscreen on, I just didn't apply enough of it I guess.
I can be deceiving when it's not 30 C, and a lot of people wont wear sunscreen. If I can get a burn, with sunscreen, in Dec, the weather will certainly be warm enough in October!!!
Katdb