Irkutsk Weather in October
What's the weather like in Irkutsk (Irkutsk) in October 2025?
The climate in Irkutsk during October can be summarized as cool and reasonably dry.
October is in the fall / autumn in Irkutsk and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cold 6°C (43°F), whilst at night -5°C (24°F) is normal.
| Daytime temperature | 6.3°C 43.3°F |
|---|---|
| Nightly temperature | -4.5°C 23.9°F |
| Average temperature | 0.9°C 33.6°F |
| Daily sunshine | 5.7 hrs |
| Avg rainfall | 32 mm 1.2 ins |
| Rainy days | 9 days |
| Sea temperature | 10.6°C 51°F |
| Humidity | 70% |
| Windspeed | 6.8kph 4 mph |
On average October is the 6th wettest month of the year in Irkutsk with around 32mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.7 hours of sunshine per day.
October temperatures in Irkutsk
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Irkutsk in October 2025.
Other monthly averages
Best places to visit in October
Irkutsk weather stats
| Hottest month: | July | 23.4°C 74.1°F |
|---|---|---|
| Driest month: | February | 9mm 0.4ins |
| Sunniest month: | March | 7.5hrs |
| Coldest month: | January | -14.1°C 6.6°F |
| Wettest month: | July | 126mm 5ins |
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