Ubari is a town in southwestern Libya, located within the Fezzan region. It is situated near the Ubari Sand Sea, an area characterized by expansive dunes and a series of approximately 20 lakes, known as the Ubari Lakes, which are remnants of ancient lakes that once covered the Sahara. The climate in Ubari is extremely arid, with average annual rainfall around 8 mm, and temperatures often exceeding 40°C (104°F) during the summer months.