Serang River

Serang River is a river in northern Central Java, Indonesia, about 400 km east of the capital Jakarta. The largest tributary is Lusi River, which discharges into Serang River after passing the city of Purwodadi.

Geography
The river flows in the central area of Java with predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification). The annual average temperature in the area is 25 °C. The warmest month is October, when the average temperature is around 28 °C, and the coldest is January, at 23 °C. The average annual rainfall is 2845 mm. The wettest month is January, with an average of 527 mm rainfall, and the driest is September, with 35 mm rainfall.