Radhi is located some 30 km east of Trashigang Dzongkhag on a north facing slope. It is partly a dry Chirpine belt in its lower part and the upper part is covered with a cool broadleaf forest. It is drained mainly by two small rivers systems, namely Chongdiri in the east and Yudiri in the west. It covers 29 square km within an altitude ranging from 1,080 masl to 3,220 masl. The monthly average temperature varies between 12 degree Celsius to 22 degree Celsius and the average annual rainfall is1,353 mm and is a part of the Gamrichu watershed. (Meteorology Section, DOP).
The Gewog is surrounded by??the pastoral dominated Gewog of Merak in the south-east and mixed pastoral and arable farming in the Phongmey and Shongphu Gewogs in the east and west respectively. The small commercial town of Rangjung is in the south-west of the Gewog. It is famous for its rice and Radhi-Buray textiles. The main agricultural crops that are grown by people of Radhi are paddy, maize, soyabean, potatoes and vegetables, which are mostly used for household consumption except for rice which is mostly sold.
Radhi is a relatively small geog, it has 21 villages viz Tsangkhar, Dekiling, Dungsam, Radhi Pangthang, Khudumpang, Jonlapam, Jonla Tsatse, Tangthrang, Bongman, Chema, Melongkhar, Tsamang, Tonglingpam, Khatoe, Kadam, Drung Gonpa, Langteng, Tokshingmang,Naktshang, Phajogonpa, Langteng Sotshong with 758 households and total population of 5437.
The gewog has total number of 8 Lhakhangs and a Nunnery Institution. 6 of them are public owned and 2 of them are owned by private Kuenzang Theckcho Choden Nunnery Institute was established by Dungzin Garab Rinpoche in the year 1991 . It is located at Khardung village under Radhi Gewog. Presently the institute has 105 nuns, 2 Khempos, 4 teachers and a Lama making offerings and residing in the institute. They make offering and perform rituals for the well being of the people and sustaining harmony, peace and prosperity in the country and the king.
Namdrol Choling Lhakhang was established in the year 1908 by the initiative of Dronyer Ugyen Dorji and labour contribution from the people of Tshangkhar and Bongman villages. Before the Lhakhang is benefiting two villages but now the Lhakhang is spiritually benefiting seven villages via Tshangkhar, Melongkhar, Bongman, Chema, Radhi Pangthang, Dekiling and Langteng. They perform different celebrations and ceremonies on special occasions in this Lhakhang, by contributing labour and financial assistance from the people of the benefited villages.