Tamiang River is a river in the province of Aceh, northern Sumatra, Indonesia, [1][2] The river flows in the northern area of Sumatra with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).

[3] The annual average temperature in the area is 23 °C.

The warmest month is June, when the average temperature is around 27 °C, and the coldest is October, at 22 °C.

[4] The average annual rainfall is 3483 mm.

The wettest month is December, with an average of 522 mm rainfall, and the driest is March, with 178 mm rainfall.