My bedroom reached 30.5C at some point last night (I have a meter that measures humidity and temperature and remembers maximums and minimums). But I'm not currently sleeping in my bedroom. I'm sleeping in my living room downstairs, which is much cooler. I dug out an inflatable camping mattress and put that on the floor. Not as good as a bed normally, but better than a bed in a 30C room. That might be useful for you too, depending on your home.
Fans always just blow air around without changing the temperature. Strictly speaking they increase the temperature slightly because the electric motor will generate a small amount of heat, but that's not enough to notice. They work by convection, which still works at 30C. Best bet is to get some or all of your clothes off and have the fan pointing directly at bare skin.