Irkutsk Weather in January
January in Irkutsk brings very low temperatures around -14°C (7°F) during the day, dropping to -24°C (-11°F) at night, with minimal snowfall.
Rainfall in Irkutsk in January
Typically, you can expect about 12 days of snow this month, with 11 mm (0.4 in) on average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Irkutsk in January
January in Irkutsk brings very low temperatures, with highs of -14°C (7°F) and nights around -24°C (-11°F). During January, you'll experience the winter season. Expect a distinctly cold feel throughout the day, not just overnight. Nights drop below freezing to -24°C (-11°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. This month tends to bring the coldest weather of the year, so be sure to pack enough warm clothing to stay comfortable.
Sunshine in Irkutsk in January
This month is characterized by fewer sunny days, with about 93 hours of sunshine. It's great for those who appreciate cooler, less sunny days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June and July typically offer the best weather for Irkutsk.
Irkutsk Temperature in January
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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
51-year average (1976-2026)
Based on our historical records, temperatures in Irkutsk typically stay consistent throughout January, with daily highs averaging around -14°C (7°F). Nights are very cold, with lows typically ranging from -25°C (-13°F) to -22°C (-8°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather records for Irkutsk in January
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 January
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Irkutsk.
- On January 10, 2002, temperatures climbed to 0°C (32°F), marking the warmest January day on record.
Best Places in Russia in January
Find out more about the weather in Russia and which places have the best travel conditions in this month. See all of Russia in January →
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 January
It's wise to bundle up for freezing conditions in Irkutsk in January. If you have a winter jacket with good insulation, waterproof winter boots, thermal layers, and warm accessories it's smart to pack them. Hand and foot warmers can be lifesavers, especially during the night. Dry conditions mean you won't need to worry about rain protection. With limited sunshine expected, sunglasses aren't a priority for packing.
What To Do in Irkutsk in January
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 January
Where to go in January - average daytime high across popular destinations.
Adler
8°C (46°F) Sochi
9°C (48°F) Anapa7°C (45°F) Gelendzhik
7°C (45°F) Saint Petersburg
-2°C (28°F) Moscow-3°C (27°F) Kazan-7°C (19°F) Yekaterinburg-9°C (16°F) 
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