It depends very much on the location and design of the building you're going to be living in. I had a ground floor condo with half of the back wall buried and very little direct sun, so it barely ever got above 75 degrees. Where it became a problem was if I left my windows open because the moist warm air would condense when it came inside and then there was a potential of mold. I had an AC but used it for only a couple days total. After a couple weeks, a bank or other air conditioned place seems very frigid. It's not uncommon for Dominican to crank their ACs up to "11" when they have it.
When it comes to fans, I like the floor ones that swivel. Somehow they seem more effective than having one blow on you non-stop. Keep in mind that Dominicans will bundle up in jackets if it's below 75 and rainy.
When it comes to fans, I like the floor ones that swivel. Somehow they seem more effective than having one blow on you non-stop. Keep in mind that Dominicans will bundle up in jackets if it's below 75 and rainy.