During the summertime, sun protection is the most important single consideration for an Egypt trip, especially for the fair-skinned. Wearing a sunhat is essential. Cheap, and pure cotton, sunhats are made locally and available everywhere. Travel clothing should be light and comfortable, 100% cotton clothing is the best and robust shoes are a must! The climate of Egypt is characterized by a hot season from May to October and a cool season from October to May. Extreme temperatures during both seasons are moderated by the prevailing northern winds.
-In the coastal region average annual temperatures range from a maximum of 37° C (99° F) to a minimum of 14° C (57° F). Wide variations of temperature occur in the deserts, ranging from a maximum of 46° C (114° F), during daylight hours, to a minimum of 6° C (42° F) after sunset. During the winter season desert temperatures often drop to 0° C (32° F). The most humid area is along the Mediterranean coast, where the average annual rainfall is about 200mm. Precipitation decreases rapidly to the south; Cairo receives on average only about 29mm of rain each year, and in many desert locations it may rain only once in several years!
There are 5 days called Khamsin between March and April, when sandstorms can occur sporadically, blowing in different places according to the wind direction.
Winter (between October and May) weather is colder than most people anticipate, and cold winds blow over the desert at sunrise and sunset. Even when it is warm outside, it can be surprisingly cold inside the massive stone Temples. In winter, showers can fall everywhere, so bring a few items of light but warm clothing, so that you can cope with the cold early