Among of five provinces in North-Central Vietnam, Thanh Hoa Province is surrounded by Son La, Hoa Binh, Ninh Binh provinces on the north, Nghe An Province on the south, East Sea on the east with 102km coastline, and Laos on the west.
Topography is divided into plain, coastal and mountainous regions. Hilly and mountains account three quarters of the total area. The Western region own abundant resources of forest products, and huge hydroelectric potentials. The plain is the third largest one of Vietnam.
Owing to the cool climate and high rainfall, the province has annual average temperature of 24.5ºC. Rainy season often begins in June and ends in October