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The best time to visit Irkutsk
February, March, June, July and August — daytime highs -11–25°C. Every number on this page is measured, not guessed.
Irkutsk month by month
| Month | Day | Night | Wet days | |
|---|---|---|---|---|
| January | -15°C | -24°C | 4 | Shoulder |
| February | -11°C | -22°C | 3 | Best |
| March | 1°C | -12°C | 5 | Best |
| April | 10°C | -2°C | 7 | Shoulder |
| May | 17°C | 4°C | 9 | Shoulder |
| June | 23°C | 11°C | 11 | Best |
| July | 25°C | 14°C | 13 | Best |
| August | 22°C | 13°C | 13 | Best |
| September | 16°C | 6°C | 10 | Shoulder |
| October | 7°C | -2°C | 6 | |
| November | -4°C | -12°C | 4 | |
| December | -12°C | -21°C | 5 |
The short version
Warmest: July, around 25°C by day. Coolest: January, around -15°C by day and -24°C at night. Wettest: July with about 13 wet days. Driest: February with about 3.
If you want fewer people: January, April, May, September sit right beside the best months. The weather is close and the crowds are not.
Book it for those months
Prices climb as the good months fill up.
Common questions
When is the best time to visit Irkutsk?
The best months are February, March, June, July and August, when daytime highs sit -11–25°C.
What is the hottest month in Irkutsk?
July, with daytime highs around 25°C.
What is the wettest month in Irkutsk?
July, with about 13 wet days. The driest is February with about 3.
When is the cheapest time to visit Irkutsk?
Prices follow the weather. The months either side of the best ones — January, April, May, September — are usually cheaper with similar conditions.
Temperatures and wet days are measured, not estimated: ERA5 reanalysis for 2021-2023, at Irkutsk, Irkutsk Oblast. Source: Open-Meteo.