Red Sea- when to go? In Egypt, there are four types of climate: moderate in the valley of the Nile, near Cairo half-desert, desert in the south and on the coast of the Mediterranean.
Annual rainfall is low (less than tens of millimeters), and the south of the country no rain almost never.
The high tourist season in Egypt lasts from November to February - in Cairo and Luxor there is the coolness (or an average of 18 to 23 degrees Celsius at night in the winter time it rains), and therefore it is difficult to hotels availability. In March and April, prices are falling and it gets looser, but often blows when khamsin - an unpleasant, strong and hot wind from the Sahara.
At the end of June in Egypt, you have real heat. It's getting hot early in the morning. Nights in Egypt, in turn, tend to be cool, and the desert are quite cold-temperature drops rapidly up to 0 degrees. Always hot in Upper Egypt and in the desert, and the highest heat prevailing in Cairo (in the summer for more sensitive people can be unbearable). Cooler on the coast of the Mediterranean Sea and the Red Sea.
Top fly in the months from March to June and in October and November - is when cooler, nicer, less crowded and cheaper than in the season. In another time for children and the elderly may be far too hot. Better then select holidays from lying down on the beach and not too tiring tours or cruise on the Nile. Bus trip will be tiring.