Dongguan is an important industrial city located in the Pearl River Delta, borders the provincial capital of Guangzhou to the north, Huizhou to the northeast, Shenzhen to the south, and the Pearl River to the west.
The climate of Dongguan is subtropical. It lies south of the Tropics of Cancer. The average temperature is 22.8C throughout the year. The average rainfall is 1,756.8 millimeters.

Many foreign travelers to Dongguan fly into Hong Kong, which allows visa-free entry to holders of US, Canadian and most European passports. After landing, visitors may apply for a visa to enter the rest of China. US Passport holders need a China Entry Visa to proceed to any location in Mainland China.
One can travel from Hong Kong to Dongguan by bus, ferry, or train. Passengers travelling overland must disembark from their transport at the Hong Kong/China border to go through customs and immigration, except for those traveling on the Mass Transit Railway intercity services (former Kowloon-Canton Railway) from Hung Hom Station to Dongguan, Guangzhou and beyond.
Depending on the time of day, using the ferry may be the most convenient way to travel from Hong Kong, as it allows one to avoid long queues at the land border checkpoint between Hong Kong and mainland China.
Rail services in and out of the city call at Dongguan railway station where there are direct train services to Guangzhou East railway station in Guangzhou; and Hung Hom Railway station in Hong Kong.
The Humen Pearl River Bridge is a suspension bridge over the Pearl River. Completed in 1997, it has a main span of 888 m.
While the city is the third largest exporting region in China, behind Shanghai and Shenzhen (and a major center for Taiwanese investment), outside of China, Dongguan has yet to gain the kind of name recognition realized by Shenzhen (just an hour away, and down-river from Dongguan). This may be because the city has placed an emphasis on investing in infrastructure, rather than directly targeting major corporations with financial incentives for economic development. Still, Dongguan has been identified by high level representatives of the National Development and Reform Commission of the central government as being one of the most significant growth regions for technology in the coming years.