Temperatures in December
It's pleasantly warm in December in Sumatra with an average temperature of 20°C. Temperatures this month range from a low of 17°C to a high of 22°C. At night, you can expect temperatures between 8°C and 14°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Sumatra in December. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of December
The month of December starts in Sumatra with mild temperatures, averaging around 21°C during the day and nights close to 12°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month.
Mid-December
By mid-December, the average daytime temperature drops to around 20°C, with nights close to 11°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
End of December
By the end of December, the average daytime temperature in Sumatra will be around 20°C, with nights close to 12°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
Precipitation in December
In December, there is an average of 127 mm of precipitation, spread over 9 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
The average precipitation chance is 29% per day this month. Though it seems pretty low, the weather’s variable. Some days have higher and others lower precipitation chances, which lowers the average.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in December for Sumatra. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Sumatra in December |
London | ||
|---|---|---|---|
 Average Temperature |
20°C | 9°C | |
 High Temp |
22°C | 11°C | |
| Low Temp |
17°C | 8°C | |
 Total Precipitation |
127 mm | 67 mm | |
| Rainy Days |
9 days | 10 days | |
November
UV index
The UV index is a maximum of 4 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is December a good time to visit Sumatra?
After some sun? Then December isn’t the best time to be in Sumatra. The temperature is pleasant, but there’s too much chance of rain this month.
The hurricane season in Sumatra runs from June to November.
Temperature records for Sumatra in December
With 28°C, Sumatra hit the highest temperature in the last 10 years in December 2022. The lowest daytime temperature in this month was 3°C in 2022. The extreme night temperatures ranged from a low of -7°C to a high of 23°C.
Check out the climate of Sumatra for all months and discover the best travel time
Daily Temperature in December in Sumatra
This chart shows the average daily temperatures, both day and night, for each day in December in Sumatra, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in December in Sumatra
The chart below shows the average daily precipitation in December for Sumatra, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for December, you can expect around 9 days of rain in Sumatra.
Daily UV Index in December in Sumatra
This chart shows the average daily UV index in December in Sumatra, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in December in Sumatra Over the Years
This chart shows the average temperature in December in Sumatra, measured in degrees Celsius, over the past years.
Total Precipitation in December in Sumatra Over the Years
This chart shows the average precipitation in December in Sumatra, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in December for Sumatra
Click on a specific day in December for detailed info on the typical weather on that day in Sumatra. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in December in Sumatra
Have you been to Sumatra in December?
Share your weather experience in December in Sumatra.
Average Weather in Sumatra by Month
Click on a month below to see detailed weather info for Sumatra. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
