Aruba's defining practical advantage is that it lies south of the corridor most Atlantic hurricanes follow. Storms are not impossible, but the island's risk profile through late summer is materially lower than that of the eastern Caribbean, which is why it attracts couples who cannot move a date and cannot absorb a washout.
The landscape is not the Caribbean of postcards. Aruba is dry — closer to desert than jungle — with cactus, boulder fields inland, and the wind-bent divi-divi trees that lean permanently southwest because the trade winds never stop. That aridity is what keeps the sky clear and the water the colour it is on Eagle Beach and Palm Beach.