I have AC, but I don't like using it because its wasteful and inefficient, not to mention expensive to run. We just open all of the doors and windows, turn on all the fans, and dress lightly and it seems to work fine for us.
I have spend my hot summer in UK in summer the weather of UK is wonderful. I have visited this beautiful country a lot of time and have fun there. It has many place to visit but one place which i like and want to spend time there is "Oxford" it is very popular all over the world due to Oxford university with elegant spires pricking the skyline and impressive colleges at every turn. The oldest university and its museums are inspirational and more to the city than intellectual pursuits with a lively music scene and raucous nightlife.
To keep cool, I'd suggest freezing multiple bottles of water and taking them with you. When they melt you get a refreshing cold drink.
You can also use the bottle as an ice pack.