Hadong-Gun is in the scope of social and economic influence of Jinju-City. It is also under the influence of Gwangyang-City, which is part of Honam area (Jella-do provinces), southwestern part of Korea due to its geographical location. Hadong-Gun is a place where not only Yeongnam(Southeastern part of Korea) and Honam influence assimilate but also cultural and economical activities of both provinces interchange.
Since the topography of Hadong-Gun is high to the north, low to the south, long from east to west, and narrow from south to north, it makes it harder to connect east and west provinces together. Hadong-Gun is surrounded by an industrial belt linking Jinju-City and Sacheon-City to the east, an industrial belt around Gwangyang to the west, Hallyeo Maritime National Park and the clean sea area to the south, and Jirisan National Park to the north. As such it is said it takes shape of `Baesanimsu’ (meaning location backed by a mountain and facing a river) according to Feng Shui theory, thus forming ideal environment for human habitation.
This area is heavily affected by a seasonal wind due to the Sobaek Mountain Range. Summer is hot and humid due to south-easterly wind whereas winter is cold and dry due to north-easterly wind. Hadong area has relatively high precipitation. In 2003, Hadong had the precipitation of 2,230mm, which is much higher than national average of 1,159mm.
The prevailing wind in spring is south southwest wind, in summer, south southwest wind and north northeast wind, in autumn, west southwest wind, and in winter, north northwest wind
The mountains and valleys in Hadong are high and deep.
There are so many small and large rivers including the Seomjingang that the area is foggy.
During the tea harvesting season, temperature varies a lot between day and nighttime.
These climatic conditions contribute to excellent taste of Hadong tea.
In addition, well drained rich soil in Hadong is also helpful to produce high quality tea leaves.