Diffa is a city in southeastern Niger, situated on the north bank of the Komadougou Yobe River, known for its seasonal floodplain and riverside gardens cultivating red peppers. The city is divided by Route Nationale 1, with the Grand Marché serving as its commercial and transport hub. Diffa experiences a hot climate with distinct wet and dry seasons. Accessible via partially paved highways connecting it to Zinder, Maïné-Soroa, and N'guigmi, the city lies just 5.5 km from the Nigerian border. Key landmarks include the Great Mosque of Diffa, a wrestling arena near the Grand Marché, and Diffa Stadium. Air travel was previously available via Diffa Airport, though commercial flights have been suspended since 2022.