Suakin had been the principal African pilgrimage port to Mecca for centuries, its coral buildings famous throughout the Red Sea world. By 1900 its harbor was too shallow for modern steamships, and the Anglo-Egyptian administration decided to start over. Port Sudan was a purpose-built colonial city, laid out for cargo rather than character. Within a generation it was handling nearly all of Sudan's international trade, a share it has never given up. Today the port still moves 90 percent of what the country imports and exports, a chokehold that has shaped every political calculation in Sudanese history. An oil pipeline reached the port from Khartoum in 1977, and a modern road and a 1,067-millimeter-gauge rail line follow the same general route across the Nubian Desert.

Port Sudan sits on the western shore of the Red Sea at the foot of the Red Sea Hills, in a climate as hostile as anywhere on the African coast. Summer temperatures routinely exceed 45 degrees Celsius. Winter still pushes past 30. Average annual rainfall is 76 millimeters, and between January 1983 and June 1984 no rain fell at all. Fresh water has to be pulled from the Wadi Arbaat in the hills or distilled from the sea in salt-evaporating pans. In 2016, reporters described a city rationing water while the fuel depots along the waterfront ran full. The Beja people, the indigenous inhabitants of this coast, have lived in these conditions for millennia. Their Bar'uut, "the harbor," is what Beja speakers still call Port Sudan.

After the October 2021 coup in Khartoum, the Beja tribal council closed the port for a week in protest. Trade stopped. Fuel stopped. The new military government negotiated, and the blockade lifted, but it demonstrated what every Sudanese ruler has had to learn: Port Sudan's economics are national, but its politics are local, and the Beja can turn off the country's circulatory system when they choose. Parallel pressures were building from outside. In 2020, Russia announced plans for a naval base for 300 personnel and four warships. The deal stalled, then returned, then stalled again. Iran held similar talks. A proposed new seaport at Abu Amama, 200 kilometers north, attracted six billion dollars in preliminary Emirati investment in 2022. For a city of under 400,000 on a coastline most of the world cannot locate, Port Sudan has had a great deal of attention.

In April 2023, fighting broke out in Khartoum between the Sudanese Armed Forces under General Abdul Fattah al-Burhan and the Rapid Support Forces under Mohamed Hamdan Dagalo, known as Hemedti. Khartoum collapsed street by street. The government that could flee, fled, and much of it fled to Port Sudan. Ministries reopened in requisitioned buildings near the waterfront. Embassies relocated. Al-Burhan ran the war from the city, and Hemedti, from the territory he controlled, threatened to declare a rival government, a warning that Sudan might be on the Libyan trajectory of two rival capitals, two rival states. Analysts used the phrase "de facto capital" for Port Sudan, and the phrase turned into reality by administrative default.

Displaced families began arriving as soon as the shells started falling on Khartoum. They came by bus, by truck, on foot, carrying what they could. Reuters and Bloomberg and Al Jazeera all filed the same story from different angles: Port Sudan, a port designed for goods, not for people, trying to hold hundreds of thousands of them. Shelters opened in schools. Aid agencies set up at the port itself. The heat that had always defined the city now pressed down on families with no insulation, no reliable water, and sometimes no food. In 2023, VOA reported displaced Sudanese in Port Sudan suffering heat exhaustion, food shortages, and the complete loss of whatever they had left behind. The city was doing what it could. It was not enough, and nobody pretended it was.

On May 4, 2025, the Rapid Support Forces launched a drone attack on Port Sudan, the first time the war's front lines had reached the wartime capital. The strikes targeted the Osman Digna Air Base and a goods warehouse, and the damage was reported as limited. A day later, another wave of drones hit fuel depots. A fire rose over the waterfront. Arab nations condemned the strikes. The message was clear. The war was no longer somewhere else. For a city that had absorbed the country's displaced population, fed the front with fuel, and run what remained of the government, the attack landed as a warning. Even the refuge is within range. Port Sudan, the British-built port that never set out to be a capital, is the only one the country has right now.