Bahrain International Airport lies in the temperate mid-latitudes at 26.27° N, 50.64° E, on Asia/Bahrain time (UTC+3).
Bahrain International Airport has 2 runways. The longest, 12L/30R, measures 12,979 ft by 197 ft, which puts the field in the full-length intercontinental category: a fully loaded Boeing 777 or Airbus A350 can depart for the far side of the world. The surface is asphalt. Both are lit for night operations.
Runway 12L/30R is aligned roughly south-east/north-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 south-east/north-west alignment, so a strong crosswind means a crosswind landing rather than a switch to another strip.
The runways are not interchangeable. 12R/30L is 8,302 ft against 12L/30R's 12,979 ft, a difference of 4,677 ft, so the shorter one generally takes regional traffic while the longer handles anything heavy.
At 6 ft the field is effectively at sea level, which is the friendliest case for aircraft performance: maximum lift, maximum thrust and the shortest takeoff runs an aircraft is capable of.