Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Irkutsk features a humid continental climate (Dwb).Temperatures typically range between -19 °C (-1 °F) and 19 °C (66 °F) through the year, but rarely can drop to -41 °C (-41 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 467 mm (18.4 inches) and receives 88 rainy days on the 1 mm (0.04 inches) threshold annually.Irkutsk enjoys an average of 3499 hours of sunshine throughout the year, and daylight varies from 7 hours 46 minutes to 16 hours 41 minutes per day.
The warmest months in Irkutsk are June, July and August, with daily mean temperatures ranging from 16 to 19 °C (61 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -19 to -16 °C (-1 - 3 °F) throughout the day. On average each year, Irkutsk experiences 23 days above 25 °C (77.0 °F) and 181 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | -5°C (24°F) | 5°C (41°F) | 12°C (54°F) | 28°C (82°F) | 31°C (89°F) | 33°C (92°F) | 32°C (90°F) | 30°C (86°F) | 26°C (79°F) | 22°C (71°F) | 10°C (50°F) | 3°C (38°F) |
Mean maximum | -7°C (20°F) | 0°C (33°F) | 10°C (50°F) | 22°C (73°F) | 26°C (79°F) | 28°C (83°F) | 30°C (87°F) | 28°C (83°F) | 24°C (76°F) | 16°C (61°F) | 8°C (47°F) | -2°C (28°F) |
Average high | -14°C (7°F) | -10°C (14°F) | 1°C (34°F) | 10°C (50°F) | 16°C (61°F) | 22°C (71°F) | 24°C (75°F) | 22°C (72°F) | 16°C (60°F) | 8°C (46°F) | -3°C (27°F) | -12°C (10°F) |
Daily mean | -19°C (-1°F) | -16°C (3°F) | -5°C (23°F) | 4°C (39°F) | 10°C (50°F) | 16°C (61°F) | 19°C (66°F) | 17°C (63°F) | 11°C (52°F) | 3°C (37°F) | -7°C (20°F) | -17°C (2°F) |
Average low | -23°C (-9°F) | -21°C (-6°F) | -11°C (12°F) | -2°C (29°F) | 4°C (40°F) | 10°C (51°F) | 14°C (57°F) | 13°C (56°F) | 7°C (45°F) | -1°C (30°F) | -10°C (14°F) | -21°C (-5°F) |
Mean minimum | -33°C (-27°F) | -33°C (-27°F) | -22°C (-8°F) | -8°C (17°F) | -2°C (29°F) | 5°C (41°F) | 9°C (49°F) | 9°C (48°F) | 1°C (34°F) | -6°C (21°F) | -23°C (-8°F) | -35°C (-31°F) |
Minimum | -41°C (-41°F) | -40°C (-39°F) | -30°C (-22°F) | -11°C (13°F) | -4°C (24°F) | 2°C (37°F) | 8°C (46°F) | 4°C (39°F) | -1°C (31°F) | -8°C (18°F) | -28°C (-18°F) | -39°C (-38°F) |
Compare temperature, precipitation, sunshine, UV index in Irkutsk, Russian Federation with other places around the world.
Irkutsk usually has the most precipitation in July, August and September, with an average of 11 rainy days and 86 mm (3.4 inches) of precipitation per month.The driest months in Irkutsk are January, February and November. On average, 12 mm (0.5 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 12 (0.5) | 11 (0.4) | 16 (0.6) | 19 (0.8) | 48 (1.9) | 47 (1.8) | 96 (3.8) | 88 (3.5) | 75 (2.9) | 25 (1.0) | 13 (0.5) | 19 (0.7) |
Average precipitation days (≥ 1 mm) | 4 | 4 | 4 | 6 | 11 | 10 | 12 | 12 | 10 | 6 | 4 | 5 |
The sunniest months in Irkutsk are May, June and July, when the sun shines an average of 12 hours 1 minutes a day.Least sunny months in Irkutsk: January, November and December receive an average of 6 hours 22 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 165 | 246 | 310 | 332 | 358 | 376 | 371 | 342 | 295 | 279 | 229 | 190 |
Mean daily daylight hours | 8h 16m | 9h 53m | 11h 53m | 13h 56m | 15h 44m | 16h 41m | 16h 11m | 14h 35m | 12h 37m | 10h 35m | 8h 45m | 7h 46m |
Irkutsk experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure.January, February and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly Irkutsk UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |