Đồng Nai lies in the monsoon tropical zone and is affected by the north-east and south-west monsoon. It is also under the influence of the Pacific Ocean tropical atmosphere between April and October. The climate is divided into two distinct seasons: the rainy season lasts from March or April to November and the dry season from December to March or April of the following year. The average temperature is between 23.9 and 29.0 °C, much lower than the standard level of tropical regions (26-30 °C). Its annual rainfall is quite high with 1,500 - 2,700 mm.