Egypt lies primarily between latitudes 22° and 32°N, and longitudes 25° and 35°E. At 1,001,450 square kilometres (386,660 sq mi), it is the world's 30th-largest country. Due to the extreme aridity of Egypt's climate, population centres are concentrated along the narrow Nile Valley and Delta, meaning that about 99% of the population uses about 5.5% of the total land area. 98% of Egyptians live on 3% of the territory.
Egypt is bordered by Libya to the west, the Sudan to the south, and the Gaza Strip and Israel to the east. Egypt's important role in geopolitics stems from its strategic position: a transcontinental nation, it possesses a land bridge (the Isthmus of Suez) between Africa and Asia, traversed by a navigable waterway (the Suez Canal) that connects the Mediterranean Sea with the Indian Ocean by way of the Red Sea.
Apart from the Nile Valley, the majority of Egypt's landscape is desert, with a few oases scattered about. Winds create prolific sand dunes that peak at more than 100 feet (30 m) high. Egypt includes parts of the Sahara desert and of the Libyan Desert. These deserts protected the Kingdom of the Pharaohs from western threats and were referred to as the "red land" in ancient Egypt.
Towns and cities include Alexandria, the second largest city; Aswan; Asyut; Cairo, the modern Egyptian capital and largest city; El Mahalla El Kubra; Giza, the site of the Pyramid of Khufu; Hurghada; Luxor; Kom Ombo; Port Safaga; Port Said; Sharm El Sheikh; Suez, where the south end of the Suez Canal is located; Zagazig; and Minya. Oases include Bahariya, Dakhla, Farafra, Kharga and Siwa. Protectorates include Ras Mohamed National Park, Zaranik Protectorate and Siwa.
On 13 March 2015, plans for a proposed new capital of Egypt were announced.
Most of Egypt's rain falls in the winter months. South of Cairo, rainfall averages only around 2 to 5 mm (0.1 to 0.2 in) per year and at intervals of many years. On a very thin strip of the northern coast the rainfall can be as high as 410 mm (16.1 in), mostly between October and March. Snow falls on Sinai's mountains and some of the north coastal cities such as Damietta, Baltim and Sidi Barrani, and rarely in Alexandria. A very small amount of snow fell on Cairo on 13 December 2013, the first time in many decades. Frost is also known in mid-Sinai and mid-Egypt. Egypt is the driest and the sunniest country in the world, and most of its land surface is desert.
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 bringing scorching sand and dust particles, and usually brings daytime temperatures over 40 °C (104 °F) and sometimes over 50 °C (122 °F) more 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.
Prior to the construction of the Aswan Dam, the Nile flooded annually (colloquially The Gift of the Nile) replenishing Egypt's soil. This gave Egypt a consistent harvest throughout the years.
The potential rise in sea levels due to global warming could threaten Egypt's densely populated coastal strip and have grave consequences for the country's economy, agriculture and industry. Combined with growing demographic pressures, a significant rise in sea levels could turn millions of Egyptians into environmental refugees by the end of the 21st century, according to some climate experts.
Egypt signed the Rio Convention on Biological Diversity on 9 June 1992, and became a party to the convention on 2 June 1994. It has subsequently produced a National Biodiversity Strategy and Action Plan, which was received by the convention on 31 July 1998. Where many CBD National Biodiversity Strategy and Action Plans neglect biological kingdoms apart from animals and plants, Egypt's plan was unusual in providing balanced information about all forms of life.
The plan stated that the following numbers of species of different groups had been recorded from Egypt: algae (1483 species), animals (about 15,000 species of which more than 10,000 were insects), fungi (more than 627 species), monera (319 species), plants (2426 species), protozoans (371 species). For some major groups, for example lichen-forming fungi and nematode worms, the number was not known. Apart from small and well-studied groups like amphibians, birds, fish, mammals and reptiles, the many of those numbers are likely to increase as further species are recorded from Egypt. For the fungi, including lichen-forming species, for example, subsequent work has shown that over 2200 species have been recorded from Egypt, and the final figure of all fungi actually occurring in the country is expected to be much higher. For the grasses, 284 native and naturalised species have been identified and recorded in Egypt.