At , the country is larger in size than Taiwan or Belgium. The highest point is . Its terrain is mostly low coastal plains with swamps of the Guinean mangroves rising to the Guinean forest-savanna mosaic in the east. Its monsoon-like rainy season alternates with periods of hot, dry harmattan winds blowing from the Sahara. The Bijagos Archipelago lies off of the mainland. The country is home to two ecoregions: Guinean forest-savanna mosaic and Guinean mangroves.