| Bila River | |
| Name Other: | Sungai Bila, Soengai Bilah, Batang Bila, Air Bila |
| Pushpin Map: | Indonesia Sumatra#Indonesia |
| Pushpin Map Size: | 285 |
| Pushpin Map Caption: | Location of river mouth |
| Source1 Location: | North Sumatra |
| Mouth Location: | Tanjung Sarang Elang |
| Subdivision Type1: | Country |
The Bila River is a river in northern Sumatra, Indonesia, about 1,200 km northwest of the capital Jakarta.[1] [2] It is a tributary of the Barumun River.
The river flows in southwest Java with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[3] The annual average temperature in the area is 24 °C. The warmest month is August, when the average temperature is around 26 °C, and the coldest is January, at 23 °C.[4] The average annual rainfall is 3766 mm. The wettest month is November, with an average of 381 mm rainfall, and the driest is March, with 126 mm rainfall.[5]