Egypt has an unusually hot, sunny and dry climate. Average high temperatures are high in the north but very to extremely high in the rest of the country during summer. The cooler Mediterranean winds consistently blow over the northern sea coast, which helps to get more moderated temperatures, especially at the height of the summertime. The Khamaseen is a hot, dry wind that originates from the vast deserts in the south and blows in the spring or in the early summer. It brings scorching sand and dust particles, and usually brings daytime temperatures over  and sometimes over  in the interior, while the relative humidity can drop to 5% or even less. The absolute highest temperatures in Egypt occur when the Khamaseen blows. The weather is always sunny and clear in Egypt, especially in cities such as Aswan, Luxor and Asyut. It is one of the least cloudy and least rainy regions on Earth.