Summer in Dubai is the offseason for tourism, so you will not see many people visiting Dubai during this time, except for those on business visits, but you can get the best discounts for flights and hotels in Dubai during this period.
You can beat the heat by heading to the Wild Wadi Water Park or just laze around in the hotel pool accompanied by refreshing drinks. Another way to beat the heat is to have a siesta in the hottest part of the day and venture out in the early mornings or late evenings. Alternatively, you can choose to pamper yourself with a long spa session. Another thing that can be done in the hottest part of the day is shopping. A stroll along the beautiful beaches before sunset is the ideal way to spend your evening. You can even opt for a short camel ride in the sand dunes.