Dumai in december: average Weather, Temperature and Climate
Weather in Dumai in december 2026
The weather in Dumai in december comes from statistical datas on the last years. You can view the weather statistics the entire month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
tolerable weather UV index: 7
Weather at 6am
77°F
Partly Cloudy
30% of time
29%
17%
10%
Weather at 12pm
88°F
Moderate rain at times
37% of time
34%
14%
10%
Weather at 6pm
79°F
Moderate rain at times
34% of time
29%
14%
13%
Weather at 3am
76°F
50%
17%
16%
9%
Evolution of daily average temperature and precipitation in Dumai in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Dumai in december.
The climate of Dumai in december is tolerable
In december in Dumai, the climate is wet (with 9.4in of precipitation over 15 days). This is better than the previous month since in november it receives an average of 11.5in of precipitation over 18 days.
The climate comfortable in that locality december. Temperatures are up to 88°F. The minimum is 77°F. Thus, the mean temperature average in december in Dumai is 83°F. Note that seasonal normals in contrast with those observed in Dumai in december with a maximum record of 95°F in 2011 and a minimum record of 72°F in 2021. You You can hope to have about 24 days with temperatures above 86°F, or 77 of time.
On this month of december, day length in Dumai is generally 12:02. The sun rises at 06:08 and sets at 18:10.
With proper weather, the month of december is okay (but not good) to go in this city in Indonesia.
Dumai: another month?
If you can push back the dates of your trip, we advise you to go in january to Dumai. more information
Seasonal average climate and temperature of Dumai in december
Check below seasonal norms These datas are set from the weather statements of the last years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 83°F | ||||
| Highest temperature | 88°F | ||||
| Lowest temperature | 77°F | ||||
| Highest record temperature | 95°F (2011) | ||||
| Lowest record temperature | 72°F (2021) | ||||
| Number of days at +86°F | 24 day(s) (77%) | ||||
| Number of days at +65°F | 31 day(s) (100%) | ||||
| Sea temperature | |||||
| Average sea temperature | 85°F | ||||
| Lowest sea temperature | 83°F | ||||
| Highest sea temperature | 87°F | ||||
| Wind | |||||
| Wind speed | 8km/h | ||||
| Wind temperature | 77°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 9.4in | ||||
| Number of days with rainfall | 15 day(s) (47%) | ||||
| Record daily rainfall | 5in (2009) | ||||
| Other climate data | |||||
| Humidity | 93% | ||||
| Visibility | 8.54km | ||||
| Cloud cover | 51% | ||||
| UV index | 7 | ||||
| Daily sunshine hours | 10 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:08 | ||||
| Time of sunset | 18:10 | ||||
| Length of day | 12:02 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | tolerable | ||||
How was the weather last december?
Here is the day by day recorded weather in Dumai in december 2025:
74°F to 90°F
74°F to 86°F
74°F to 88°F
74°F to 79°F
74°F to 90°F
74°F to 83°F
72°F to 86°F
72°F to 83°F
72°F to 81°F
74°F to 83°F
72°F to 85°F
74°F to 86°F
74°F to 79°F
74°F to 83°F
74°F to 79°F
72°F to 81°F
74°F to 79°F
72°F to 85°F
72°F to 83°F
74°F to 88°F
74°F to 86°F
74°F to 86°F
72°F to 90°F
74°F to 92°F
74°F to 85°F
74°F to 83°F
74°F to 83°F
74°F to 76°F
74°F to 81°F
74°F to 83°F
72°F to 77°F
Map: other cities on the island of Sumatra in december
Cities near Dumai:
| Pulau Rupat in december | tolerable weather |
| Pekanbaru in december | tolerable weather |
| Tesso Nilo National Park in december | tolerable weather |
| Payakumbuh in december | very bad weather |
| Padangsidempuan in december | tolerable weather |
| Bukittinggi in december | tolerable weather |
| Kisaran in december | tolerable weather |
| Lac Maninjau in december | tolerable weather |
| Sungaiguntung in december | tolerable weather |
| Pariaman in december | tolerable weather |
| Batam in december | tolerable weather |
| Sibolga in december | tolerable weather |
Click over cities on the map for information about the weather in december.
Dumai
perfect weather
good
tolerable
bad
very bad
Weather data for Dumai in december:
Weather data for Dumai for december are derived from an average of the weather forecast since 2009 in Dumai. There is a margin of error and these forecasts are to be considered as general information only. The weather in Dumai can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Dumai.