Grantley Adams International Airport lies in the tropics at 13.07° N, 59.49° W, on America/Barbados time (UTC-4). 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.
Grantley Adams International Airport has 1 runway. The longest, 09/27, measures 11,000 ft by 150 ft, which puts the field in the long-haul capable category: widebodies operate comfortably, though the very longest sectors may need a payload trade. The surface is asphalt. It is lit for night operations.
Runway 09/27 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.