The ABC islands are part of the
Leeward Antilles, which is the westernmost area of the
Lesser Antilles. They lie immediately to the north of
Falcón State, Venezuela. Due to their political history, they are sometimes considered to be part of
North America along with the other Caribbean islands, but are on
South America's geographical plate and continental shelf as with
Trinidad and Tobago. ABC does not indicate the geographical order to each other; from west to east the islands are Aruba, Curaçao, and Bonaire. Aruba is a flat island, much coastal land being exposed to tidal storm surges. Bonaire and Curaçao are surrounded by reefs, and so are much more sheltered from this. Bonaire's and Curaçao's reefs are popular tourist destinations. The ABC islands have an atypical hot desert climate seen in hot pockets of Australia,
Köppen climate classification BWh and
BWk, with some notable rain but an excess of
evaporation over
precipitation. Surfaces on these islands hold little moisture and evaporate the little rainfall they receive. In addition,
Aruba–Curaçao–Bonaire cactus scrub is the most common vegetation on these islands. Furthermore, the ABC islands are very dry as they lie north of the
Intertropical Convergence Zone. Only in their short rainy season from October to December or January are they exposed to showers or storms formed from the northeast
trade winds. The rainy season is powerfully influenced by the
Southern Oscillation resulting in very high variability. During strong
El Niño years like 1911/1912, 1930/1931, 1982/1983, and 1997/1998, annual (fiscal year) rainfall can be less than , and even under in Curação in 1911/1912. As much as fell during strong
La Niña northern hemisphere winters: 1933/1934, 1970/1971, 1988/1989, 1999/2000, 2010/2011, and 2020/2021, with the highest monthly totals being over . Temperatures in the ABC islands are uniformly hot, averaging around year-round, with comfortable humidity and minima rarely falling below even on the mildest mornings, although afternoons rarely top .
Environment Bonaire is known for being a "diving paradise", with ecotourism playing a large part in its economy. The islands have a huge variety of wildlife, including
flamingos and four species of
sea turtle. == Demographics ==