Daytime highs, nighttime lows and the warmest cities in Sumatra, Indonesia this September.
Sumatra, Indonesia, a region in Indonesia, experiences maximum daytime temperatures in September ranging from 27°C (81°F) in Tuk Tuk to 33°C (91°F) in Jambi. Nighttime temperatures generally drop to 24°C (75°F) in Jambi and 19°C (66°F) in Tuk Tuk.
Discover the typical September temperatures for the most popular locations of Sumatra on the map below. Detailed insights are just a click away.
Check the conditions for any month of the year.
Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Sumatra.
Marker color shows the average daytime high temperature in September: blue is cold, red is hot.
Pick a city to see its September weather averages.
Drill down to September weather for any region in Indonesia.
Expect daytime temperatures around 32°C (90°F) in Medan. That makes September a very high month for Sumatra, Indonesia.
Average overnight lows in Sumatra, Indonesia during September sit near 23°C (73°F) in Medan.
According to our recent database analysis, Jambi is the warmest city. It experiences an average maximum daytime temperature of approximately 33°C (91°F) and rarely drops below 24°C (75°F) during the night.
When looking through our records, we find that Tuk Tuk stands out as the coolest city in Sumatra, Indonesia for the month of September. Daytime highs average 27°C (81°F) and it cools down to about 19°C (66°F) at night.
Medan usually sees around 122 hours of sunlight, indicating a moderately sunny period.
We have much more information about the climate in Sumatra.
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