Geographically, Busan has the Straits of Korea to its south; Ulsan to the north; and Gimhae to the West. Cities that share almost the same latitude with Busan include Jinhae and Gwangju in Korea, as well as Tokyo, Algiers and Oklahoma City internationally. Busan is eight hours ahead of GMT. As for its geopolitical location, the city is located at the Southern tip of a strip that connects Asia, Siberia and Europe. It also serves as a main gateway to the Pacific Ocean. This strategic location places the city at the center of international sea transportation.
Busan is located at the southeastern most tip of the Korean peninsula and in the mid-latitude temperate zone, which has seasonal winds. It has four seasons: spring, summer, fall and winter. The annual average temperature is 14.9°C. The annual average precipitation is 1,441.9mm. Busan has strong winds compared to other areas in Korea. Spring begins in March and ends in late June. Cherry blossom trees bloom in late March and the temperature is very comfortable from April to June. The rainy season at the end of June and July signals the beginning of the coming summer heat. The highest mean temperatures of around 32°C are at the end of July through mid-August. Fall is from early September through late-November. The weather is nice and cool at this time because of the continental high atmospheric pressure. Winter starts by the end of November and continues until February, but Busan rarely receives any snowfall. The average winter temperature is 3.8°C. Tourists can enjoy Busan throughout all seasons because of the nice weather and beautiful scenery. In summer, the city, particularly Haeundae and Gwangalli beaches are crowded with visitors who come to enjoy the beautiful and laidback lifestyle Busan residents have come to love.
From its opening in 1876, the port city of Busan quickly developed into a hub of trade, commerce and industry. This development resulted in a rapid increase in its population, which had already reached 200,000 by 1936. A major leap in Busan's population came with the breakout of the Korean War, which resulted in an endless stream of people into the city. As a result, the population of Busan exceeded 1 million by the end of 1955. Another factor that spurred the population increase was the government policy for economic growth. People from urban areas kept streaming into the city for jobs. By the end of 1994, there were approximately 4 million people who called Busan their home. Since 1995, the population has slowly begun to decrease. As of December 2018, Busan was home to 3,494,019 people, a decrease of 26,287 compared to 2017. The male population was at 49.3 percent, while the female population was at 50.7 percent. The population of foreign residents living in Busan stood at 52,566, an increase of 2,913 compared to 2017.