When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Aeropuerto Internacional Ezeiza/Ministro Pistarini is roughly greater than that of Al Ain. You can assume this to be the case over the next 10 days.
Temperatures around the 45 °Cs can be experienced in July. The weather in Al Ain is hotter than in Aeropuerto Internacional Ezeiza/Ministro Pistarini. Plan for potential changes in flight availability as peak weather approaches in this location.