Irkutsk Weather in December
December in Irkutsk sees daytime temperatures around -11°C (12°F) and lows of -21°C (-6°F) at night. Pack a rain jacket because some snowfall is likely.
Rainfall in Irkutsk in December
Analyzing past climate data, one can expect approximately 14 days of snow, averaging 16 mm (0.6 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Irkutsk in December
Daytime temperatures in Irkutsk reach -11°C (12°F) in December, dropping to -21°C (-6°F) at night. December is part of winter. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. At -21°C (-6°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. The month brings very cold weather, so dressing warmly is essential. Prepare with multiple layers for added warmth.
Sunshine in Irkutsk in December
The month has fewer sunny days, with around 65 hours of sunshine.If you prefer dry days with pleasant temperatures, December may not be the ideal month to visit Irkutsk. Our weather planner can help you explore destinations with more pleasant weather conditions.
Irkutsk Temperature in December
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Irkutsk Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Irkutsk - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Irkutsk typically drop from around -10°C (14°F) at the start of December to approximately -13°C (9°F) by the end. Nights are very cold, with lows typically ranging from -24°C (-11°F) to -18°C (0°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather records for Irkutsk in December
Browse day-by-day weather records for Irkutsk spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Irkutsk historical weather extremes in December
Based on weather observations in Irkutsk between 2001 and 2025, these are the recorded extremes during December.
- The warmest day in December was on December 2, 2013, with a maximum of 5°C (41°F).
- Peak precipitation in December occurred on December 2, 2019, when 11 mm (0.4 in) of precipitation was measured.
Best Places in Russia in December
Find out more about the weather in Russia and which places have the best travel conditions in this month. See all of Russia in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Irkutsk in December
We recommend you pack up your warm winter gear for Irkutsk in December. If you have insulated boots, thermal layers, and a heavy winter coat that can handle snow and freezing temperatures it's smart to bring them. Don't forget gloves, a warm hat, and a scarf. Almost no rain is expected, so no need to bring rain gear. You can probably leave your sunglasses at home, because sunny days are pretty rare this month.
What To Do in Irkutsk in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming1/10 -
Cycling1/10 -
Walking1/10 -
Camping2/10 -
Outdoor sports1/10
Irkutsk 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Irkutsk climate overview or explore weather in Russia.
Popular in December
Where to go in December - average daytime high across popular destinations.
Sochi
11°C (52°F) Adler11°C (52°F) Anapa9°C (48°F) Gelendzhik
8°C (46°F) Saint Petersburg0°C (32°F) Moscow
-2°C (28°F) Kazan-5°C (23°F) Yekaterinburg-7°C (19°F) 
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