It's definitely hot...and humid! It's also very crowded but we find if you get to the parks at opening (or for EMH), the crowds are manageable for the first few hours...FP also works great. As many people will tell you, go to the parks early, head back to your resort for a mid-day break, then head back to the parks later in the day. Being in Disney in July is better than being anywhere else. Have a great time...we're counting the days until our trip.