An Chan is a coastal commune in the south of Tuy An district, 18 km from the district center. The north borders An My commune; the south borders An Phu commune, Tuy Hoa city; the west borders An Tho commune; the east borders the East Sea. An Chan has a 3.5 km long coastline. The natural area of the commune is 1344.21 ha, the population is 12,382 people / 3,027 households (2024 data), divided into 03 villages in the agricultural area and 02 villages in the fishing area, the majority are Kinh people, only a few are Chinese people.
An Chan has many different types of terrain, including low hills and plains. The general slope of the commune's terrain is gradually lower from west to east. The low hills and mountains running close to the sea, Hon Chua island off the coast of My Quang village, associated with Ganh Ba and Ganh Ong, are prominent local landscapes.
The plain terrain has an absolute height of less than 10m, with many small, narrow fields, quickly fragmented, deposited by fertile alluvial soil, rich with abundant irrigation water, creating favorable conditions for high-yield rice cultivation. In addition to alluvial soil, An Chan plain also has black soil (also known as da tay soil), suitable for growing short-term industrial crops with economic value such as cotton, fabric, sugarcane, beans, flowers, vegetables of all kinds, etc.
Low mountainous terrain has an absolute height of less than 100m, of which some mountains are often mentioned by people such as: Hung Mountain, Chop Vung Mountain, Dong Nai Mountain (Thom Mountain), Ba Loi Mountain, Ong Bo Mountain, Ba Son Mountain, Ba Tam Mountain. The mountains in An Chan were destroyed by war and humans, so there are no old forests left, mainly bare hills, planted with acacia and eucalyptus trees. The low mountainous area has a large area of unused land, which is a great potential for economic development of the commune.
Regarding climate, like other localities in Tuy An district, An Chan is located in the tropical monsoon climate zone, the hot and humid weather is relatively stable, and is rarely affected by cold air, the average annual temperature is about 27.1C, the hottest month is 29.9C (6 months), the coldest month is 23.7C (1 month), the average daily temperature range is 7-10C. Due to the influence of the mountainous coastal terrain blocking the west, the wind regime is different; from November to February of the following year there are North and Northeast winds, from March to May there are mainly East and Southeast winds, from June to October there are Southeast winds mixed with Southwest winds. June and July are the dry periods of the year. The average annual rainfall is 2,104mm, with 131 rainy days. The climate is divided into two distinct seasons. The dry season lasts from January to August. In the dry season, the climate is hot and dry due to the influence of the Southwest wind regime, with little rain, accounting for 20-30% of the annual rainfall. The rainy season lasts from September to December. In the rainy season, due to the influence of the Northeast monsoon bringing rain, the temperature is low, the weather is cool, and the rainfall accounts for 70-80% of the annual rainfall. The climate is tropical monsoon, so the commune only occasionally experiences storms, without major floods, which is favorable for agricultural production in the direction of diversifying crops and livestock. However, due to seasonal rainfall, combined with low-lying terrain, some places in the commune are flooded. In addition, some years the rain is not in season, affecting the growth of rice and other crops. In the summer, there are hot and dry spells due to little rain, and there are 17-25 days/month with average daily temperatures above 30C.
The average number of sunshine hours in a year in An Chan is relatively large, from 2,300 to 2,600 hours; the average dry season is 8 hours/day, the rainy season is 5-6 hours/day. The average evaporation fluctuates between 1100-1400mm.
Currently, the An Chan intra-field canal system has been completed. In particular, Phu Quang canal has enough water to irrigate the fields for two rice crops of the commune. Water sources for irrigation of crops in An Chan commune also include Dap Lang stream, originating from Gieng Chua (Phu Thanh village) to Dong Nai bridge (An Phu commune, Tuy Hoa city) and then flowing into the sea. Dap Lang stream flows windingly through the fields of Ho Di, Xa Hai, Cay Quan, Ong Sau, Go Cay Me, Dong Sa, Dong Dun in Phu Thanh village, about 4,000m long, making irrigation convenient.
The commune's transportation system is quite convenient. The commune has National Highway 1, the North-South railway running through the area about 3km long. The inter-commune and inter-village roads have been expanded and concreted, making travel easy and convenient. In addition, the commune also has a coastline of nearly 3.5km, which is a very favorable condition for developing sea transport. Favorable natural conditions, fertile land for developing agriculture - forestry - fishery, with many beautiful natural landscapes such as Bai Xep, Hon Chua, Ganh Ong, Ganh Ba, the sea has rich seafood resources are the advantages for people to choose this place as a place to settle down from the early days of land opening, and that is the premise for the formation of villages and communes.