Guangdong is situated in the southernmost part of China's mainland in between latitude 20013'-25031'north and longitude 109039°š- 117019°šeast. Facing the South China Sea with a continental coastline of 3,368 kilometers and numerous islands, it covers a land area as large as 180 thousand square kilometers, about 1.87% of China's land territory. The whole province is within the low latitudes and the Tropic of Cancer runs through the central part of its mainland. The landscape of Guangdong slopes down from the north to the south. Within its territory, mountains, plains and hills intermingle with each other. Most of the rivers flow from its north to south. Major rivers in Guangdong include the Pearl River, Hanjiang River and Jianjiang River, among others. The Pearl River is 2,122 kilometers long, the longest in the province. It converges with Xijiang River, Beijiang River and Dongjiang River, and is the third longest river in China. The Pearl River Delta and the Hanjiang Delta along the coast of the South China Sea are so fertile as to be famous as a land of fish and rice.
Guangdong is located in the subtropical zone with most of its territory in the subtropical monsoon climate. It has long summers, warm winters and rich rainfall. The average annual rainfall ranges from 1,500 mm to 2,000 mm, and the average annual evaporation from 1,000 mm to 1,200 mm, making it a humid area. The average annual temperature rises gradually from nineteen degrees centigrade in the north to twenty-three degrees centigrade in the Leizhou Peninsular in the south. The annual average sunlight hours increase from 1750 hours in the north to 2200 hours in the south. Therefore, it is green all the year round with plants flourishing everywhere in the whole province.