Some things I'd do (I'm from Australia): * close curtains/blinds during the day (as long as it doesn't make things too dark). * leave as many windows as p

Some things I'd do (I'm from Australia): * close curtains/blinds during the day (as long as it doesn't make things too dark). * leave as many windows as possible open during the night (outside will cool down quicker than inside, so a breeze coming in a window will be very nice). * chuck a few drinks in the fridge (a late afternoon cold lemonade will be amazing if it's almost 40 degrees). * turn unnecessary lighting off. * have a salad or something not-cooked for lunch/dinner * accept that you'll struggle to get six hours of good sleep.