If you're looking for lush tropical scenery don't go there, you won't find it. Instead you will find cactus, aloe, Divi Divi trees and a variety of other desert fauna and flora . Anne and I first visited Aruba in 1981 and again in 1983. On our third trip in 1987 we purchased a time share at the Dutch Village and we have returned every year since. We have visited in the months of April, May, June and August, and we've noticed no appreciable difference in the weather during those times.
Rainfall is never a problem.
At most it sprinkles a few minutes and the cooling rains are a welcomed change from the hot Sun. The temperature ranges in the high eighties to low nineties. Evenings are cooler but not that much cooler, low eighties. The hot Sun and high temperatures are bearable because of the constant trade winds that sweep the island. These winds are constant and quite strong.