Daytime highs, nighttime lows and the warmest cities in Sumatra, Indonesia this January.
Sumatra, Indonesia, a region in Indonesia, experiences maximum daytime temperatures in January ranging from 26°C (79°F) in Tuk Tuk to 32°C (90°F) in Dumai. Nighttime temperatures generally drop to 24°C (75°F) in Dumai and 19°C (66°F) in Tuk Tuk.
Discover the typical January 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 January: blue is cold, red is hot.
Medan averages a daytime high of 32°C (90°F) in January, which is very high for Sumatra, Indonesia.
Average overnight lows in Sumatra, Indonesia during January sit near 23°C (73°F) in Medan.
Based on our systematic data collection, Dumai has been identified as the city with the highest average temperatures. The daytime temperature usually hovers around 32°C (90°F), while at night it goes down to an approximate temperature of 24°C (75°F).
Our database indicates that in January, Tuk Tuk is the city with the coolest temperatures in Sumatra, Indonesia. You can expect daytime highs of 26°C (79°F) and nighttime lows close to 19°C (66°F).
Medan enjoys a balanced 127 hours of sunlight. This makes it neither too overcast nor too sunny.
We have much more information about the climate in Sumatra.
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