Silau River is a river in northern

Sumatra Sumatra () is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the list of islands by area, sixth-largest island in the world at 482,286.55 km2 (182,812 mi. ...

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania, between the Indian Ocean, Indian and Pacific Ocean, Pacific oceans. Comprising over List of islands of Indonesia, 17,000 islands, including Sumatra, ...

, about 1300 km northwest of the capital

Jakarta Jakarta (; , Betawi language, Betawi: ''Jakartè''), officially the Special Capital Region of Jakarta (; ''DKI Jakarta'') and formerly known as Batavia, Dutch East Indies, Batavia until 1949, is the capital and largest city of Indonesia and ...

.Aek Silau
at Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27 It is a tributary of

Asahan River The Asahan River () is one of the principal rivers in North Sumatra, Indonesia, that begins in Porsea, Toba Regency near the southeast corner of Lake Toba.

Geography

The river flows in the northern area of Sumatra with predominantly

tropical rainforest climate A tropical rainforest climate or equatorial climate is a tropical climate sub-type usually found within 10 to 15 degrees latitude of the equator. There are some other areas at higher latitudes, such as the coast of southeast Florida, United States ...

(designated as ''Af'' in the Köppen-Geiger climate classification). The annual average temperature in the area is 24 °C. The warmest month is June, when the average temperature is around 26 °C, and the coldest is January, at 23 °C. The average annual rainfall is 2950 mm. The wettest month is November, with an average of 381 mm rainfall, and the driest is June, with 117 mm rainfall.

References

{{Rivers of Sumatra Rivers of North Sumatra Asahan Toba basin

Geography

See also

References