Transport in Guinea-Bissau Transport in Guinea-Bissau Transport infrastructure in Guinea-Bissau is basic, with most roads outside the capital being unpaved. There are no railways in Guinea-Bissau. In 1998 an agreement was signed between Portugal and Guinea-Bissau for construction of railway to Guinea. The Trans–West African Coastal Highway crosses Guinea-Bissau, connecting it to Banjul (the Gambia), Conakry (Guinea), and eventually to 11 other nations of the Economic Community of West African States (ECOWAS). Several rivers are accessible to coastal shipping in Guinea-Bissau. In 1999 no merchant vessels were operating. The main airport serving the country, and the only one with scheduled commercial service, is
Banjul and a relatively short wet season covering the remaining four months. However, during those four months, Banjul tends to see heavy precipitation. August is usually the rainiest month, with on average 500 mm of precipitation falling. Temperatures are somewhat constant, though it tends to be slightly cooler during the wet season than the dry season. According to a Gambian government minister, Banjul is at risk of submerging under water by a metre rise in sea levels as a result of climate change and global warming. The primary method reaching the city by land is by roadway. A highway connects Banjul