The Rawas River is a river in northern Sumatra, Indonesia, about northwest of the capital Jakarta It is a tributary of the Musi River.
The river flows in the southern area of Sumatra which has a predominantly tropical rainforest climate (designated as Af in the KöppenâÂÂGeiger climate classification). The annual average temperature in the area is . The warmest month is October, when the average temperature is around , and the coldest is June, at . The average annual rainfall is . The wettest month is December, with an average of rainfall, and the driest is June, with of rain.