Bangkok (UK: /bæŋˈkɒk/,US: /ˈbæŋkɒk/) is the capital and most populous city of the Kingdom of Thailand. It is known in Thai as Krung Thep Maha Nakhon or simply Krung Thep. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in Central Thailand, and has a population of over 8 million, or 12.6 percent of the country's population. Over 14 million people (22.2 percent) lived within the surrounding Bangkok Metropolitan Region at the 2010 census, making Bangkok an extreme primate city, significantly dwarfing Thailand's other urban centres in terms of importance.
Bangkok is connected to the rest of the country through the national highway and rail networks, as well as by domestic flights to and from the city's two international airports. Older public transport systems include an extensive bus network and boat services which still operate on the Chao Phraya and two canals. Taxis appear in the form of cars, motorcycles, and "tuk-tuk" auto rickshaws.
Like most of Thailand, Bangkok has a tropical savanna climate under the Köppen climate classification and is under the influence of the South Asian monsoon system. The rainy season begins with the arrival of the southwest monsoon around mid-May. September is the wettest month, with an average rainfall of 334.3 millimetres (13.16 in). The rainy season lasts until October, when the dry and cool northeast monsoon takes over until February.