I would have to agree, The Texas heat and humidity is terrible. I lived for a while in north central and I can only remeber a handful of nice days all year. So I moved back to Arizona, yes I know we are hot but as that funny little saying goes "It is a dry heat". The lack of humidity makes a difference. I spent a summer in Oregon when it was a 105 and that is hot for up there. Down here people tend to keep the horses in shaded stalls during the day some have fans to move air +/- misting systems. Then we turn them out at night when it is not so hot. Our barn has sand stalls, we wet the sand and with the fans it keeps the air the barn cooler. My paint horse also has a Kensington fly sheet that I have put on her and then hosed her off. As the air passes through the meshing it acts as a cooler. I also keep the ground wet in certain areas (around H2O tanks, favorite standing spots) so it is cooler on their feet. My horses I have found prefer to stand under a shade screen cover versus a solid cover if given the choice, it tends to be a little cooler since air passes through yet they are not in the sun. Where the solid cover tends to generate heat. Well, thats what some of us do. There are a few barns that I know of that have evaporated coolers in the barns, they work good until about August when the monsoons really kick in. There are a handful that have A/C.
I have a friend that her mare foaled in May, (& it is hot by that time here, most foals here are born Jan-April), They went out and got a protable A/C unit to put in front of the stall and then had a fan to help keep the air moving and cool. Have to protect those babies.
Well, you and your critters try to stay cool, maybe head to the beach.