Ubari is located in one of the sunniest and driest areas in the world. It has a hot desert climate (Köppen climate classificationBWh) with short, very warm winters but long, extremely hot summers. Average annual rainfall is one of the lowest found on the planet with only 8 mm (0.31 in) and many decades may easily pass without seeing any rainfall at all. Ubari has permanent, unlimited sunshine and clear skies all year-round and in all seasons. Clouds are extremely rare over this bone-dry land. Average high temperatures exceed 40 °C (104 °F) from June to September.
On 19 November 2011, Saif al-Islam Gaddafi and a few associates were captured and detained about 50 kilometers west of Ubari as they were trying to flee to neighbouring Niger. Following the 2nd civil war, the city has been claimed by independent Tuareg and Toubou tribes.