Irkutsk in January
In January, Irkutsk averages -14°C (6°F) during the day and -23°C (-9°F) at night, with around 10 days of rain (10 mm total).
Off-peakConditions are deeply cold — proper winter gear is essential. Plan for unsettled weather and bring rain gear.
January in Irkutsk is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How January compares to the rest of the year in Irkutsk
January is one of the coolest months in Irkutsk (12th of 12) and one of the driest months (10th of 12). Daytime temperature runs 21°C below the annual average (7°C). January runs 2°C cooler than December (-12°C) and warms a further 5°C into February (-10°C).
January sunrise & sunset in Irkutsk
Times shown for Irkutsk local time (Asia/Irkutsk), calculated for the 15th of January. They shift by a few minutes day to day across the month.
Photography light in Irkutsk — January
Golden-hour and blue-hour windows for the 15th of January, in Irkutsk's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Irkutsk in January
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on January's tier (Off-peak) and Irkutsk's popularity.
Crowds & pricing — January in Irkutsk
This is off-peak for Irkutsk — the lowest prices of the year and the fewest crowds, but with real trade-offs: some restaurants, hotels, and beach businesses may close for the season; weather conditions can make outdoor activities unpredictable; and a handful of seasonal sights run reduced hours or close entirely. Great if you prefer a quiet local rhythm and don't mind the climate giving you reasons to choose indoor activities.
Why this tier: challenging tourism weather
Sun & mosquito risk — January in Irkutsk
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
🥶 Bitter cold — Irkutsk in January
Gear: Snow rare but air is freezing. Insulated coat, hat, and gloves still required — wind chill is the real enemy.
Irkutsk in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | -14°C / 6°F | -23°C / -9°F | 10 mm | 10 | — |
| February | -10°C / 14°F | -20°C / -4°F | 8 mm | 9 | — |
| March | 1°C / 34°F | -11°C / 13°F | 13 mm | 9 | — |
| April | 11°C / 51°F | -2°C / 28°F | 22 mm | 13 | — |
| May | 17°C / 62°F | 3°C / 38°F | 42 mm | 16 | — |
| June | 24°C / 74°F | 11°C / 51°F | 58 mm | 16 | — |
| July | 25°C / 77°F | 14°C / 57°F | 101 mm | 17 | — |
| August | 22°C / 72°F | 13°C / 55°F | 91 mm | 16 | — |
| September | 15°C / 60°F | 6°C / 43°F | 62 mm | 14 | — |
| October | 7°C / 45°F | -2°C / 29°F | 17 mm | 11 | — |
| November | -4°C / 24°F | -12°C / 10°F | 12 mm | 11 | — |
| December | -12°C / 10°F | -20°C / -5°F | 14 mm | 11 | — |
Other cities with similar January weather
🌍 See the full ranked list of climate twins for Irkutsk in January →
Frequently asked questions
How hot is Irkutsk in January?
In January, Irkutsk averages a high of -14°C (6°F) and a low of -23°C (-9°F) — generally cold.
Does it rain a lot in Irkutsk in January?
January can be fairly wet in Irkutsk, with about 10 rainy days on average.
Is January a good time to visit Irkutsk?
January is cold. It suits travelers who are comfortable with cold weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Irkutsk in January?
Pack heavy winter layers, a coat, hat and gloves, plus a compact umbrella or rain jacket. See the full January packing list for Irkutsk for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.