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Monthly climate in Irkutsk, Russian Federation

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.

Monthly average temperatures in Irkutsk, Russian Federation §

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).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Irkutsk, Russian Federation.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  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 climate in Irkutsk with other places

Compare temperature, precipitation, sunshine, UV index in Irkutsk, Russian Federation with other places around the world.

Monthly average precipitation in Irkutsk, Russian Federation §

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.

Monthly average precipitation and precipitation days in Irkutsk, Russian Federation.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  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

Monthly sunshine hours in Irkutsk, Russian Federation §

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.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Irkutsk, Russian Federation.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  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

Solar UV radiation in Irkutsk, Russian Federation §

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.

Average daily maximum UV levels by month for Irkutsk, Russian Federation.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  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