The main city of Port Harcourt is the Port Harcourt city in the Port Harcourt Local Government Area, consisting of the former European quarters now called old Government reservation area (GRA) and New layout areas. The Port Harcourt Urban Area (Port Harcourt metropolis) is made up of the city itself and parts of Obio/Akpor Local Government Area. Port Harcourt City, which the capital of Rivers State, is highly congested as it is the only major city of the state. A law has recently passed by the state house and governor Amaechi's administration to spread development to the surrounding communities as part of the effort to decongest the Port Harcourt metropolis. The Greater Port Harcourt urban area, spans eight local government areas that include Port-Harcourt local government, Okrika, Obio/Akpor, Ikwerre, Oyigbo, Ogu/Bolo, Tai and Eleme local governments respectively has a total population estimate for 2012 at 1,947,000 making it the fifth largest urban area in Nigeria (only the urban areas of Lagos, Kano, Ibadan and Abuja that are bigger than it.
Port Harcourt features a tropical monsoon climate with lengthy and heavy rainy seasons and very short dry seasons. Only the months of December and January truly qualifies as dry season months in the city. The harmattan, which climatically influences many cities in West Africa, is less pronounced in Port Harcourt. Port Harcourt's heaviest precipitation occurs during September with an average of 370 mm of rain. December on average is the driest month of the year, with an average rainfall of 20 mm. Temperatures throughout the year in the city are relatively constant, showing little variation throughout the course of the year. Average temperatures are typically between 25°C-28°C in the city
