65 km

East by the Bien Dong Sea, Vinh Longon the west, Soc Trang on the south, north is Ben Tre Province

Lying in the coastal tropical monsoon region, Tra Vinh has general advantages of abundant radiation, high and stable temperature. However, being a coastal province Tra Vinh suffers strong winds from the east and southeast, high evaporation, and less rain.

• The climate is temperate with average temperature of 26-27oC, reaching the highest of 35,8oC and the lowest of 18.5oC. The amplitude between day and night is low, about 6.4oC.
• The average humidity is 80 - 85%/year, varying from 79% in the dry season to 88% in the rainy season. This is a favorable condition for development and spreading of some epidemic diseases.
• The rainy season lasts from May to November and the dry season from December to April of the following year. The average rainfall is 1,400 – 1,600 mm, providing convenient conditions for production, business, and tourism. However, the rainfall distributes irregularly in terms of time and space: 90% of rainfall concentrate from May to November and it gradually decreases from the north to the south direction, reaching highest in Cang Long District (110 raining days/year) and Tra Vinh City (98 days) and the lowest in districts of Cau Ngang (79 days) and Duyen Hai (77 days). The rain starts late but finish early in coastal districts.
• Drought for 10 – 18 days occur yearly and cause difficulties for production. Districts of Cau Ke, Cang Long, and Tra Cu are affected less. Tieu Can District suffers drought in the beginning of cultivation crops from June to July, the remaining districts of Chau Thanh, Cau Ngang, and Duyen Hai, meanwhile, suffer serious drought spells in the middle of cultivation crops from July to August.
• There are 2 wind seasons a year: the southwest blows from May to October, bringing vapour and rains from the west sea, the northeast wind or southeast blows from November to the next March, in parallel with large estuaries. The latter is the main cause of salinity intrusion deeped into Tra Vinh, which causes unstable production.
• Hoar frost, which is generated by humidity, low temperature, and the northeast wind, arrives in December to February of the following year. Bringing a considerable amout of salt, it affects greatly the development of some plants.

Land resources: According to the General Statistics Office, the total natural area of Tra Vinh until 01-01-2008 is 229,500 ha.

In general, 56% and 27% of the soil in Tra Vinh are affected by respective salinity and alum. To improve the land utilization efficiency, the province should implement desalination projects. The South Mang Thit Project is one of the major irrigation works of the Ministry of Agriculture and Rural Development, aiming at salinity control, fresh water holding, drainage, and alum washing for nearly 171,626 ha of cultivation land and 225,628 ha of natural land. Moreover, the projects also provides fresh water for the locals’ utilization in combination with fishery and transport development, and environmental improvement.

Water resources: The 2 rivers of Co Chien and Hau are main suppliers of water for the provincial production and living.

Besides, there is a network of complicated waterways providing water for paddy fields. The canal density distribubes relatively even, from 4 - 10 m/ha, increasing to the highest in Tieu Can District (45 m/ha) and decreasing to the lowest in disrtricts of Duyen Hai, Tra Cu, and Cau Ngang (18 – 28 m/ha).

Mineral resources: The province is formed by young deposition mixed with marine and riverine alluvium sedimentation. Consequently, the minerals comprise only sand for construction, ground filling and a little amount of clay.

Forest resources: There are about 24,000 ha. of forest and forestry land along 65 km coastline, including the whole Duyen Hai District, My Long Commune (northern, southern) Cau Ngang District, and Don Chau, Don Xuan Communes of Tra Cu District.