Irkutsk in October
In October, Irkutsk averages 7°C (45°F) during the day and -2°C (29°F) at night, with around 11 days of rain (17 mm total).
ShoulderConditions are cold — pack winter layers. Plan for unsettled weather and bring rain gear.
October 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 October compares to the rest of the year in Irkutsk
October is in the middle of the year for warmth in Irkutsk (7th of 12) and moderately rainy compared to the rest of the year (7th of 12). Daytime temperature matches the city's annual average. October runs 8°C cooler than September (15°C) and cools 11°C in November (-4°C).
October sunrise & sunset in Irkutsk
Times shown for Irkutsk local time (Asia/Irkutsk), calculated for the 15th of October. They shift by a few minutes day to day across the month.
Photography light in Irkutsk — October
Golden-hour and blue-hour windows for the 15th of October, in Irkutsk's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Irkutsk in October
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 October's tier (Shoulder) and Irkutsk's popularity.
Crowds & pricing — October in Irkutsk
Irkutsk is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — October 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.
🌬 Frosty nights — Irkutsk in October
Gear: Cold nights, milder days. Light insulated jacket fine for daytime, real coat for after dark.
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 October weather
🌍 See the full ranked list of climate twins for Irkutsk in October →
Frequently asked questions
How hot is Irkutsk in October?
In October, Irkutsk averages a high of 7°C (45°F) and a low of -2°C (29°F) — generally cold.
Does it rain a lot in Irkutsk in October?
October can be fairly wet in Irkutsk, with about 11 rainy days on average.
Is October a good time to visit Irkutsk?
October 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 October?
Pack heavy winter layers, a coat, hat and gloves, plus a compact umbrella or rain jacket. See the full October packing list for Irkutsk for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.