Tan An experiences a warm and humid climate year-round, with temperatures steadily increasing from January to May before peaking in April and May. The summer months of June to August are characterized by relatively mild temperatures, while the autumn season sees a gradual decline in temperature back to the spring-like conditions of the first few months. Winters are generally cooler but still warm, with lows reaching as high as 19 degrees Celsius in December. Throughout the year, average temperatures hover around 28-30 degrees Celsius, indicating a consistently tropical climate.