We are from Arizona so we are used to the heat. We went the end of August last year and it was crazy hot and humid! We went first thing in the mornings and took breaks during the afternoon but we were still beat up by the heat. We bought 2 of those water fans and those were a life saver. It was still hot and humid in the evenings, I remember dripping sweat and it was nighttime! We had a great time on our trip but honestly the heat really took some of the magic away for us (and that's saying a lot cuz I love love love
Disneyland). We drank lots of water but one afternoon my oldest son started to have heat stroke. He was feeling sick to his stomach, he was dizzy and he seemed very confused and almost combative. Thankfully we got him in air conditioning and pumped lots of water into him and after about 20 minutes he was doing a lot better. I honestly will never go back during August ever again. I am not trying to be negative, I am just giving you our experience and opinion. Again, I am from Arizona, born and raised so I am used to the heat (don't love it but am used to it). But I think it was quite humid that week we went and I am definately not used to humidity!

I never saw what the actual temps where but the CMs were saying it was in the 100's.