Ugh, you too? It's amazing the waste of time you can make on summer.

The most important thing is to shake off laziness from yourself; if you want to do something, just do it. No excuses like "Man it's too hot out there, I'd better just watch the TV" or "But I feel so good right here, I'd better stay". Just. Do. It.

And about what you should do, try getting into a volunteering program, or start playing a musical instrument; write a book or a fanfic, start drawing landscapes (also, it's a nice excuse to go where the green is) or pick a sport such as swimming, tennis, hiking...

I'd recommend you to make yourself a timetable; if not time will just flee. Something like, "Alright, I'm going to wake up by 9 and then have breakfast and some relax time until 10:30; then I'll go to the computer, check ToS, keep writing my fanfic and then meal at 12:30. Then I'd go to the countryside to draw some..."

Et caetera.

I would go out and try to meet as many animals as I could. Though, I would recommend a zoo, or something of that nature, instead of the wild. Especially if you live in the desert (our animals are rarely fluffy and tend to sting or poison you in one way or another)...:)