Irkutsk weather in January
Temperature, rain and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Poor
Best time to visit: May – August
What is the weather like in Irkutsk in January?
In January, Irkutsk is freezing cold: daytime highs average −14 °C, and nights often drop below freezing (−23 °C). The sun is scarce, with only about 4 hours a day. It hardly ever rains. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Irkutsk.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 30 | 32 | 39 |
| Day | −12° | −14° | −9° |
| Night | −20° | −23° | −20° |
| Sun | 2 h | 4 h | 6 h |
| Rain days | 3 | 2 | 2 |
More details for January
- Daylight
- 8 h 11 min09:06 – 17:17
- UV index
- 0 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 63 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 2 days1 cm or more of fresh snowAll months
- Time zone
- UTC+8Asia/Irkutsk
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %8 %
- Few rainy daysweight 30 %100 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Warm jacket
- Hat, scarf & gloves
Irkutsk in January: quick answers
Is Irkutsk hot in January?
No. In January, Irkutsk is freezing cold: daytime highs average −14 °C and nights drop to about −23 °C.
Does it rain much in Irkutsk in January?
It hardly ever rains.
Irkutsk month by month
The whole year in IrkutskAll destinations: RussiaWhere to go in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences