Osan in december: average Weather, Temperature and Climate
Weather in Osan in december 2026
The weather in Osan in the month of december comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by clicking on the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 86cm
Weather at 6am
32°F
Clear/Sunny
45% of time
20%
15%
15%
Weather at 12pm
38°F
Clear/Sunny
47% of time
21%
16%
12%
Weather at 6pm
36°F
Clear/Sunny
45% of time
23%
15%
13%
Weather at 3am
32°F
46%
21%
16%
14%
Evolution of daily average temperature and precipitation in Osan in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Osan in december.
The climate of Osan in december is very bad
the weather in Osan in december is relatively dry (with 1.1in of rainfall over 1 days). This is better than the previous month since in november it receives an average of 1.7in of precipitation over 2 days.
The climate is quite cold around this city december. Plan a sweater! The thermometer averaged maximum of 40°F. The minimum is 31°F. Thus, the mean temperature average on this month of december in Osan is 36°F. Note that these seasonal averages are in contrast with those observed in Osan in the month of december with a maximum record of 61°F in 2010 and a minimum record of 11°F in 2010. You can expect to have about 18 days with temperatures down below 32°F, or 58% of time.
In december in Osan, the days on average last 09:38. Sunrise is at 07:38 and sets at 17:16.
Seasonal average climate and temperature of Osan in december
Check below seasonal norms These datas are set from the weather statements of the past years of the month of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 36°F | ||||
| Highest temperature | 40°F | ||||
| Lowest temperature | 31°F | ||||
| Highest record temperature | 61°F (2010) | ||||
| Lowest record temperature | 11°F (2010) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 18 day(s) (58%) | ||||
| Wind | |||||
| Wind speed | 16km/h | ||||
| Wind temperature | 25°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 1.1in | ||||
| Number of days with rainfall | 1 day(s) (4%) | ||||
| Record daily rainfall | 1in (2012) | ||||
| Snowfall | 86cm | ||||
| Other climate data | |||||
| Humidity | 71% | ||||
| Visibility | 9.26km | ||||
| Cloud cover | 38% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 8 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 07:38 | ||||
| Time of sunset | 17:16 | ||||
| Length of day | 09:38 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Osan in december 2025:
45°F to 52°F
36°F to 40°F
23°F to 29°F
23°F to 38°F
29°F to 38°F
31°F to 40°F
40°F to 56°F
38°F to 47°F
32°F to 45°F
34°F to 47°F
41°F to 47°F
31°F to 43°F
36°F to 38°F
34°F to 40°F
31°F to 41°F
38°F to 49°F
41°F to 45°F
34°F to 45°F
36°F to 47°F
45°F to 49°F
31°F to 36°F
29°F to 40°F
32°F to 41°F
36°F to 41°F
31°F to 34°F
18°F to 25°F
23°F to 34°F
31°F to 40°F
36°F to 47°F
31°F to 36°F
23°F to 27°F
Map: other cities in South Korea in december
Cities near Osan:
| Hwaseong-si in december | very bad weather |
| Anseong in december | very bad weather |
| Ansan-si in december | very bad weather |
| Icheon-si in december | very bad weather |
| Cheonan in december | very bad weather |
| Asan in december | very bad weather |
| Incheon in december | very bad weather |
| Seoul in december | very bad weather |
| Yangp'yong in december | very bad weather |
| Namyangju in december | very bad weather |
| Goyang-si in december | very bad weather |
| Cheongju in december | very bad weather |
Click over cities on the map for information about the weather in december.
Osan
perfect weather
good
tolerable
bad
very bad
Weather data for Osan in december:
Weather data for Osan for december are derived from an average of the weather forecast since 2009 in Osan. There is a margin of error and these forecasts are to be considered as general information only. The weather in Osan 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 Osan.