In September though the trade winds die and the temperature increases slightly. This makes the perceived temperature higher. If you don't mind the heat it is a perfect time to visit the island as the island is less crowded and special travel deals are being offered for this period.

It is important to mention that Aruba lies far outside the hurricane belt, far away from the storms. On occasions Aruba might experience some small effects of nearby tropical weather. Rain showers may occur.
Most rain is falling between October and January. However even when it rains it tends to be very short, leaving plenty of sun moments for the rest of your day.