Tungkal River is a river in Jambi province, Sumatra island, Indonesia, about 700 km northwest of the capital Jakarta.

The river flows in the southwest area of Java with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification). The annual average temperature in the area is 24 °C. The warmest month is September, when the average temperature is around 26 °C, and the coldest is December, at 22 °C. The average annual rainfall is 2907 mm. The wettest month is December, with an average of 410 mm rainfall, and the driest is June, with 137 mm rainfall.

Tungkal River
Climate chart (explanation)
J F M A M J J A S O N D     144     24 20     232     26 22     254     23 21     323     25 23     278     24 24     137     26 22     245     27 23     150     27 23     183     29 22     247     27 22     303     25 23     410     23 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     5.7     75 68     9.1     79 72     10     73 70     13     77 73     11     75 75     5.4     79 72     9.6     81 73     5.9     81 73     7.2     84 72     9.7     81 72     12     77 73     16     73 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 Sumatra

0°47′46″S 103°29′16″E / 0.7962°S 103.4877°E / -0.7962; 103.4877