The Van Daalen River (Indonesian: Sungai Vandalen) is a river of Western New Guinea in Puncak Jaya and Puncak, Central Papua, Indonesia.

[1][2] The river flows in the northern area of Papua with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).

The warmest month is October, when the average temperature is around 22 °C, and the coldest is January, at 18 °C.

[4] The average annual rainfall is 5121 mm.

The wettest month is March, with an average of 573 mm rainfall, and the driest is July, with 324 mm rainfall.