Walanae River is a river in South Sulawesi on the island of Sulawesi, Indonesia, about 1500km northeast of the capital Jakarta.

The river flows in the southwest area of Sulawesi with a predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification). The annual average temperature in the area is 23°C. The warmest month is October when the average temperature is around 25°C, and the coldest is July, at 21°C. The average annual rainfall is 2550mm. The wettest month is January, with an average of 404mm of rainfall, and the driest is September, with 29mm of rainfall.

Walanae River
Climate chart (explanation)
J F M A M J J A S O N D     404     23 20     174     24 22     264     25 22     294     25 22     303     24 21     238     24 22     193     24 18     45     26 21     29     28 20     92     29 21     187     28 21     329     26 20 █ Average max. and min. temperatures in °C █ Precipitation totals in mm Source:
Imperial conversion J F M A M J J A S O N D     16     73 68     6.9     75 72     10     77 72     12     77 72     12     75 70     9.4     75 72     7.6     75 64     1.8     79 70     1.1     82 68     3.6     84 70     7.4     82 70     13     79 68 █ Average max. and min. temperatures in °F █ Precipitation totals in inches

• List of drainage basins of Indonesia
• List of rivers of Indonesia
• List of rivers of Sulawesi

• (in Indonesian) Lake Tempe, Ancient Lake of Sulawesi
• (in Indonesian) Watershed areas on the island of Sulawesi

4°22′27″S 120°21′48″E / 4.3741°S 120.3632°E / -4.3741; 120.3632