Irkutsk Weather in October
October in Irkutsk sees daytime temperatures around 8°C (46°F) and lows of -2°C (28°F) at night. Pack a rain jacket because some snow/rainfall is likely.
Rainfall in Irkutsk in October
Typically around 9 days of snow/rainfall are expected, averaging 26 mm (1 in) for the month. 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 October
In October, expect low temperatures in Irkutsk, with highs of 8°C (46°F) and lows of -2°C (28°F) at night. Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights are well below freezing at -2°C (28°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation.
Sunshine in Irkutsk in October
The area experiences a moderate amount of sunshine, with approximately 155 hours of sunlight expected. This means a decent mix of sun and overcast.If your ideal day consists of dry skies and pleasant temperatures, June and July typically offer the best circumstances for Irkutsk.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Russia, check out our Irkutsk's climate page.
Irkutsk Temperature in October
Min Temperature
-2°C (28°F)
Max Temperature
8°C (46°F)
Chance of Rain
31%
Precipitation
26 mm (1 in)
Rainy days
9 days
Humidity
73%
Sunshine
155 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Irkutsk typically drop from around 11°C (52°F) at the start of October to approximately 3°C (37°F) by the end. Nights are very cold, with lows typically ranging from -8°C (18°F) to -1°C (30°F).
Average temperatures in October
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 October
Historical weather for Irkutsk in October
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 October
Our historical data for Irkutsk spans 1976 to 2025, revealing these weather extremes.
- The warmest day in October was on October 4, 2004, with a maximum of 24°C (75°F).
Best Places in Russia in October
Find out more about the weather in Russia and which places have the best travel conditions in this month. See all of Russia in October →
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What to Wear in Irkutsk in October
Dress warmly and in layers for your trip to Irkutsk in October. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Light rain is possible, so consider bringing a small umbrella or rain jacket. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Irkutsk in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Russia, check out our Irkutsk's climate page.
Temperature Rainfall Sunshine Humidity
See the full Irkutsk climate overview or explore weather in Russia.
