Undur Sume Weather in December
Average highs run from -11°C on December 1 to -15°C on December 31, and lows from -22°C to -26°C. Normal precipitation for the month is 5 mm over about 1 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- -13°C
- Average low
- -23°C
- Precipitation
- 5 mm
- Reanalysis high
- -2°CDec 1, 2018
- Reanalysis low
- -39°CDec 22, 2012
- Daylight
- 8 h 21 min to 8 h 04 min
- Cloud cover
- 57%
- Humidity
- 83%
- Dew point
- -21°C
- Wind
- 12.6 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | -11°C | -22°C | -2°C 2018 | -29°C 1998 | 5% |
| Dec 2 | -11°C | -22°C | -4°C 2004 | -28°C 2003 | 5% |
| Dec 3 | -11°C | -22°C | -5°C 2010 | -30°C 2008 | 5% |
| Dec 4 | -12°C | -22°C | -7°C 2004 | -31°C 2008 | 5% |
| Dec 5 | -12°C | -22°C | -6°C 2013 | -32°C 2018 | 5% |
| Dec 6 | -12°C | -22°C | -5°C 1999 | -34°C 2018 | 6% |
| Dec 7 | -12°C | -23°C | -4°C 1994 | -33°C 2018 | 6% |
| Dec 8 | -13°C | -23°C | -6°C 2019 | -31°C 2000 | 5% |
| Dec 9 | -13°C | -23°C | -7°C 1995 | -32°C 2000 | 5% |
| Dec 10 | -13°C | -23°C | -7°C 2006 | -30°C 2018 | 4% |
| Dec 11 | -13°C | -23°C | -7°C 2015 | -31°C 1994 | 4% |
| Dec 12 | -13°C | -23°C | -6°C 1996 | -35°C 1994 | 4% |
| Dec 13 | -13°C | -23°C | -7°C 2008 | -31°C 1994 | 4% |
| Dec 14 | -13°C | -23°C | -8°C 1997 | -35°C 1994 | 4% |
| Dec 15 | -13°C | -23°C | -7°C 1998 | -35°C 1994 | 3% |
| Dec 16 | -13°C | -23°C | -7°C 1998 | -34°C 1994 | 3% |
| Dec 17 | -13°C | -23°C | -7°C 2016 | -33°C 2012 | 2% |
| Dec 18 | -13°C | -24°C | -7°C 2016 | -30°C 2009 | 2% |
| Dec 19 | -14°C | -24°C | -9°C 2016 | -32°C 2012 | 2% |
| Dec 20 | -14°C | -24°C | -8°C 2006 | -35°C 2012 | 3% |
| Dec 21 | -14°C | -24°C | -5°C 2005 | -35°C 2012 | 3% |
| Dec 22 | -14°C | -24°C | -7°C 2005 | -39°C 2012 | 2% |
| Dec 23 | -14°C | -24°C | -6°C 2006 | -36°C 2012 | 2% |
| Dec 24 | -14°C | -24°C | -7°C 1999 | -37°C 2012 | 3% |
| Dec 25 | -14°C | -24°C | -7°C 1999 | -34°C 1991 | 3% |
| Dec 26 | -14°C | -24°C | -6°C 1998 | -34°C 1991 | 3% |
| Dec 27 | -14°C | -25°C | -6°C 1996 | -32°C 2018 | 4% |
| Dec 28 | -15°C | -25°C | -9°C 2017 | -33°C 2020 | 4% |
| Dec 29 | -15°C | -25°C | -8°C 1995 | -35°C 2020 | 4% |
| Dec 30 | -15°C | -25°C | -8°C 2015 | -35°C 2010 | 3% |
| Dec 31 | -15°C | -26°C | -6°C 1995 | -32°C 2010 | 3% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- December 1
- sunrise 8:55 AM, sunset 5:16 PM
- December 31
- sunrise 9:17 AM, sunset 5:21 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-28. Sun and moon: computed with the NOAA solar equations and Meeus.