What kind of weather does cancun have in july?
July will be the beggining of the rainy season but not much rain yet. It will be hot and very humid. So what ! ! Just go to the beach. Right on the beach it is windy and the breeze is wonderful, blue sky, crystal clear water and beautiful white sand. Enjoy it. I always do. You should also go to the shady cenotes to swim. (The underground caverns near Cancun), this is a “must” to snorkel or dive into these spectacular underground caves. They are called cenotes. Enjoy your trip. There are so many things to see and to do, weather is not important. Best to you.