The great green macaw lives in tropical forests in the Atlantic wet lowlands of Central America from Honduras to Panama and Colombia, and in South America in the Pacific coastal lowlands in Panama, Colombia and western Ecuador, where they also occur in deciduous (seasonal), dry tropical forests. In Colombia, where both species occur, it prefers more humid woodlands than the closely related military macaw. The habitat where it breeds in Costa Rica is practically non-seasonal, evergreen rainforest, with rain some ten months of the year, a precipitation of 1,500 to 3,500 mm a year, and an average temperature of 27 °C throughout the year. In Costa Rica the habitats where great green macaws occur during breeding season is dominated by the "almendro" ("Dipteryx oleifera") and "Pentaclethra macroloba", with secondarily raffia palms ("Raphia" spp.) dominated wetlands. It is usually observed below 600 m above sea level in Costa Rica during the breeding season, but disperses to higher elevations to 1000 m after breeding, and can be seen as high as 1500 m in southern Panama.