The Khamsīn: Egypt's annual surge of extreme heat and dust

History · Published 18 October 2026 Swipe more like this →

In short: While Egypt is defined by its arid desert climate, it is subject to a specific seasonal phenomenon that pushes temperatures to dangerous extremes. Between March and June, a massive wind system sweeps across the landscape, creating sudden heat waves and some of the highest temperature records in the country.

The majority of Egypt is classified as a hot desert climate (BWh), characterized by extreme aridity and high summer temperatures. However, the country's geography creates distinct microclimates. The northern Mediterranean coast benefits from cold northwesterly winds blowing from Greece. Because there are no mountain ranges to block these winds, the coast experiences moderated temperatures, with winter highs between 15–20 °C and summer highs between 27–35 °C. The northern coast is the only region that consistently sees winter rainfall. Alexandria and Rafah stand out as the wettest locations in the country. Sunshine duration remains high throughout the nation, reaching over 4,000 hours in the interior.

In contrast, the interior regions—specifically central and southern Egypt—lack this cooling influence. In desert cities like Aswan and Luxor, average summer highs can exceed 41 °C. These areas also experience significant thermal shifts; while winters can be mild during the day, nighttime temperatures in the interior of Upper Egypt can drop to or below freezing. High-altitude locations like Saint Catherine in the Sinai mountains are noted for having the coldest winters and nights in the country. The desert regions can experience freezing conditions during winter nights. While the coast stays mild, the interior experiences much greater temperature swings. Snow is a rare occurrence, with Cairo only seeing a single snowfall in December 2013.

The most dramatic climatic event is the khamasīn. Occurring between March and June, this hot, dry, and dusty wind originates from the south or southwest. Fine sand and dust are gathered by it while moving across expansive desert areas. When it hits Egypt, it can cause temperatures to soar temporarily above 49–50 °C while dropping relative humidity to under 5%. This phenomenon is responsible for the country's absolute highest temperature records and sudden, early heat waves. The wind is generally felt around the edges of the desert. It results in a dusty atmosphere that can reach dangerous levels. These conditions create the most extreme heat spikes found in the Egyptian landscape.

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