http://www.worldexecutive.com/locations/middle_east/united_arab_emirates/dubai/weather.html
The average rainfall is from no rain at all to about 35 mm. The dry season is during the summer, and is more wet during the winter. The average temperature is from about 25- 40 degrees Celsius.
The temperature in the desert is a lot warmer than the other biomes, so the best time to travel would probably be the winter because it won"t be too hot compared to how it s in the Summer.
SOIL CONDITIONS
The soil in the desert is very dry and rocky. This is because the region is hot and gets very little rain. The lack of nutrients in the soil is one reason that there are very few plants in this biome.