Diori Hamani International Airport lies in the tropics at 13.48° N, 2.18° E, on Africa/Niamey time (UTC+1). Tropical airports contend with heat and humidity, both of which thin the air and lengthen takeoff runs, and with convective storms that build fast in the afternoon.
Diori Hamani International Airport has 2 runways. The longest, 09L/27R, measures 10,499 ft by 98 ft, which puts the field in the long-haul capable category: widebodies operate comfortably, though the very longest sectors may need a payload trade. Surfaces vary across the field (bitumen, laterite). 1 of the 2 carry runway lighting.
Runway 09L/27R is aligned roughly east/west, which is the clearest hint you get about the prevailing wind here: runways are built to face the wind that blows most often, because aircraft take off and land into it. Every runway here shares that east/west alignment, so a strong crosswind means a crosswind landing rather than a switch to another strip.