The highest reliably recorded temperature was in 1913 in the Mojave Desert of California in Death Valley. It was measured at 134 degrees F.
The summers in the Libyan Desert are very dry and hot. The Libyan Desert experiences what is known as a ghibli which is a hot dusty wind that can cause temperatures to reach 122 degrees.
North African desert temperatures can reach over 50 degrees Celsius
During the summer there are places in the Sonoran Desert that can reach or exceed 120 degrees F.
The Sonoran Desert in Mexico does reach the coastline of the Pacific and the Sea of Cortez but is classified as a hot subtropical desert and not a coastal desert.
The Simpson Desert of Australia is a hot desert.
During the peak of summer, temperatures in the desert can reach as high as 120-130 degrees Fahrenheit.
That would depend upon which desert. Some hot deserts may have temperatures that soar to 120 to 140 degrees F. (or more) on hot summer days.
In a hot and dry desert, temperatures may occasionally reach 50 degrees Celsius, or 122 degrees Fahrenheit . The norm in summer is 30 - 35 degrees C. Even in a hot desert, winter nights can be very cold, dropping to sub-zero temperatures Celsius.
In a desert environment, temperatures can reach as high as 120 degrees Fahrenheit or more during the hottest parts of the day.
Hot desert
The Gibson Desert is a hot desert.
The Arabian Desert is a hot desert.