Irkutsk Weather in December
Average highs run from -11°C on December 1 to -16°C on December 31, and lows from -19°C to -25°C. Normal precipitation for the month is 16 mm over about 3 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
- -14°C
- Average low
- -22°C
- Precipitation
- 16 mm
- Reanalysis high
- -1°CDec 1, 2013
- Reanalysis low
- -41°CDec 20, 2008
- Daylight
- 8 h 05 min to 7 h 46 min
- Cloud cover
- 73%
- Humidity
- 94%
- Dew point
- -19°C
- Wind
- 10.4 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 | -19°C | -1°C 2013 | -27°C 2014 | 15% |
| Dec 2 | -11°C | -19°C | -1°C 2004 | -32°C 1991 | 16% |
| Dec 3 | -12°C | -19°C | -2°C 2013 | -32°C 2003 | 15% |
| Dec 4 | -12°C | -20°C | -5°C 2017 | -34°C 1991 | 15% |
| Dec 5 | -12°C | -20°C | -3°C 2009 | -34°C 1991 | 15% |
| Dec 6 | -13°C | -20°C | -4°C 2013 | -37°C 1991 | 15% |
| Dec 7 | -13°C | -20°C | -4°C 1999 | -34°C 2012 | 16% |
| Dec 8 | -13°C | -21°C | -4°C 1999 | -35°C 2012 | 16% |
| Dec 9 | -13°C | -21°C | -4°C 1999 | -30°C 2000 | 16% |
| Dec 10 | -13°C | -21°C | -5°C 2006 | -33°C 2017 | 16% |
| Dec 11 | -13°C | -21°C | -5°C 1998 | -38°C 2010 | 16% |
| Dec 12 | -13°C | -21°C | -4°C 2019 | -38°C 2010 | 16% |
| Dec 13 | -13°C | -21°C | -6°C 1998 | -36°C 2010 | 16% |
| Dec 14 | -14°C | -21°C | -3°C 1998 | -40°C 2010 | 17% |
| Dec 15 | -14°C | -21°C | -4°C 1998 | -33°C 1994 | 16% |
| Dec 16 | -14°C | -22°C | -6°C 2018 | -33°C 1994 | 15% |
| Dec 17 | -14°C | -22°C | -7°C 2016 | -34°C 2009 | 14% |
| Dec 18 | -14°C | -22°C | -7°C 1996 | -34°C 2012 | 14% |
| Dec 19 | -14°C | -22°C | -5°C 2017 | -35°C 2008 | 13% |
| Dec 20 | -14°C | -22°C | -5°C 2006 | -41°C 2008 | 14% |
| Dec 21 | -15°C | -23°C | -1°C 2005 | -41°C 2010 | 14% |
| Dec 22 | -15°C | -23°C | -5°C 2005 | -41°C 2010 | 13% |
| Dec 23 | -15°C | -23°C | -5°C 2005 | -40°C 2010 | 12% |
| Dec 24 | -15°C | -23°C | -5°C 1999 | -41°C 2009 | 12% |
| Dec 25 | -15°C | -23°C | -6°C 2003 | -39°C 2009 | 12% |
| Dec 26 | -15°C | -23°C | -7°C 1993 | -36°C 2018 | 11% |
| Dec 27 | -16°C | -24°C | -6°C 1996 | -33°C 2020 | 12% |
| Dec 28 | -16°C | -24°C | -8°C 2013 | -36°C 2020 | 12% |
| Dec 29 | -16°C | -24°C | -7°C 1995 | -38°C 2020 | 11% |
| Dec 30 | -16°C | -24°C | -7°C 2013 | -35°C 2020 | 10% |
| Dec 31 | -16°C | -25°C | -3°C 1995 | -39°C 2010 | 10% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- December 1
- sunrise 8:49 AM, sunset 4:54 PM
- December 31
- sunrise 9:13 AM, sunset 4:59 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 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.