That's awful and no A/C??
Well..I have read a couple things here that might help you. Someone takes plastic jugs..like milk comes in..fills with water and freezes them. Then you can let Ulysses lay against it to cool off..and especially if you have a fan blowing the coolness from the frozen carton. It will get drippy, but that's not important compared to his safety.
Here we have cooling pads, you might be able to order online. They are cool for them to lie on. And cooling collars. You freeze them and then they go around the neck, like a bandana. There is a company..Keepdoggiesafe ..then add .com. I'm not sure if they ship overseas, but it will be a place to start.