Climate of Irkutsk, Russia
Area-weighted average across Irkutsk. For where people actually live and travel, see the cities below.
Irkutsk, a subdivision of Russian Federation, has a strongly continental climate on average. Area-weighted monthly temperatures across the whole territory range from -25.5°C / -13.9°F in January to 16.1°C / 61°F in July, with rainfall from 10 mm / 0.4 in to 77 mm / 3 in depending on the season (405 mm / 15.9 in total across the year). See the 2 cities listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | -25.5°C-13.9°F | 13 mm0.5″ | — |
| February | -22.4°C-8.3°F | 10 mm0.4″ | — |
| March | -13.5°C7.7°F | 11 mm0.4″ | — |
| April | -3.2°C26.2°F | 19 mm0.7″ | — |
| May | 5.5°C41.9°F | 36 mm1.4″ | — |
| June | 13°C55.4°F | 54 mm2.1″ | — |
| July | 16.1°C61°F | 77 mm3″ | — |
| August | 13.1°C55.6°F | 74 mm2.9″ | — |
| September | 5.7°C42.3°F | 44 mm1.7″ | — |
| October | -4°C24.8°F | 27 mm1.1″ | Snowy |
| November | -15.1°C4.8°F | 22 mm0.9″ | Snowy |
| December | -22.4°C-8.3°F | 18 mm0.7″ | — |
Frequently asked questions
What is the best time to visit Irkutsk?
Irkutsk, Russian Federation does not have a clear sunny-and-dry window by our cutoffs. The warmest month is July at 16.1°C / 61°F, and the driest is February at 10 mm / 0.4 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Irkutsk?
Irkutsk, Russian Federation has area-weighted monthly average temperatures ranging from -25.5°C / -13.9°F in January to 16.1°C / 61°F in July. Annual rainfall averages about 405 mm / 15.9 in, with the wettest month being July (77 mm / 3 in) and the driest February (10 mm / 0.4 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Irkutsk?
The hottest month in Irkutsk is July, with an area-wide average temperature of 16.1°C / 61°F.
What is the coldest month in Irkutsk?
The coldest month in Irkutsk is January, with an area-wide average temperature of -25.5°C / -13.9°F.
When does it rain most in Irkutsk?
The wettest month in Irkutsk is July, averaging about 77 mm / 3 in of rainfall. The driest is February with about 10 mm / 0.4 in.