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Monthly climate in Ilomantsi, North Karelia, Finland

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Ilomantsi features a subarctic climate (Dfc).Temperatures typically range between -8 °C (18 °F) and 17 °C (62 °F) through the year, but rarely can drop to -31 °C (-24 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 814 mm (32.1 inches) and receives 160 rainy days on the 1 mm (0.04 inches) threshold annually.Ilomantsi enjoys an average of 2954 hours of sunshine throughout the year, and daylight varies from 5 hours 1 minutes to 19 hours 52 minutes per day.

Monthly average temperatures in Ilomantsi, North Karelia, Finland §

The warmest months in Ilomantsi are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 62 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -5 °C (18 - 24 °F) throughout the day. On average each year, Ilomantsi experiences 12 days above 25 °C (77.0 °F) and 170 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ilomantsi, North Karelia, Finland.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
(42°F)		 5°C
(41°F)		 12°C
(53°F)		 18°C
(64°F)		 31°C
(88°F)		 32°C
(90°F)		 31°C
(89°F)		 29°C
(85°F)		 23°C
(74°F)		 18°C
(65°F)		 9°C
(49°F)		 3°C
(38°F)
Mean maximum 2°C
(36°F)		 2°C
(37°F)		 8°C
(46°F)		 14°C
(57°F)		 24°C
(75°F)		 27°C
(81°F)		 28°C
(83°F)		 25°C
(77°F)		 19°C
(67°F)		 13°C
(56°F)		 7°C
(46°F)		 2°C
(36°F)
Average high -5°C
(23°F)		 -5°C
(23°F)		 0°C
(32°F)		 6°C
(43°F)		 13°C
(56°F)		 20°C
(68°F)		 21°C
(70°F)		 19°C
(66°F)		 13°C
(55°F)		 6°C
(43°F)		 1°C
(34°F)		 -3°C
(27°F)
Daily mean -8°C
(19°F)		 -8°C
(18°F)		 -4°C
(25°F)		 1°C
(35°F)		 9°C
(48°F)		 15°C
(60°F)		 17°C
(62°F)		 15°C
(59°F)		 9°C
(49°F)		 4°C
(40°F)		 -0°C
(31°F)		 -5°C
(24°F)
Average low -10°C
(14°F)		 -11°C
(12°F)		 -8°C
(18°F)		 -3°C
(27°F)		 3°C
(38°F)		 10°C
(49°F)		 12°C
(53°F)		 11°C
(51°F)		 6°C
(43°F)		 2°C
(36°F)		 -2°C
(28°F)		 -7°C
(20°F)
Mean minimum -26°C
(-15°F)		 -24°C
(-12°F)		 -21°C
(-5°F)		 -11°C
(13°F)		 -4°C
(26°F)		 4°C
(39°F)		 6°C
(43°F)		 5°C
(41°F)		 -1°C
(31°F)		 -6°C
(21°F)		 -13°C
(9°F)		 -17°C
(1°F)
Minimum -31°C
(-24°F)		 -31°C
(-24°F)		 -29°C
(-20°F)		 -16°C
(4°F)		 -6°C
(22°F)		 1°C
(34°F)		 5°C
(41°F)		 4°C
(39°F)		 -3°C
(27°F)		 -12°C
(11°F)		 -18°C
(0°F)		 -26°C
(-15°F)

Compare climate in Ilomantsi with other places

Compare temperature, precipitation, sunshine, UV index in Ilomantsi, North Karelia, Finland with other places around the world.

Monthly average precipitation in Ilomantsi, North Karelia, Finland §

Ilomantsi usually has the most precipitation in July, August and October, with an average of 15 rainy days and 95 mm (3.7 inches) of precipitation per month.The driest months in Ilomantsi are January, February and April. On average, 48 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ilomantsi, North Karelia, Finland.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) 49 (1.9) 50 (2.0) 54 (2.1) 46 (1.8) 60 (2.4) 60 (2.3) 95 (3.7) 105 (4.1) 78 (3.1) 85 (3.4) 61 (2.4) 71 (2.8)
Average precipitation days (≥ 1 mm) 13 12 13 10 12 11 13 16 14 16 14 16

Monthly sunshine hours in Ilomantsi, North Karelia, Finland §

The sunniest months in Ilomantsi are May, June and July, when the sun shines an average of 15 hours 4 minutes a day.Least sunny months in Ilomantsi: January, November and December receive an average of 1 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ilomantsi, North Karelia, Finland.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 33 123 239 344 419 495 471 363 252 133 54 22
Mean daily daylight hours 6h 1m 8h 46m 11h 50m 14h 56m 17h 57m 19h 52m 18h 49m 15h 56m 12h 53m 9h 49m 6h 51m 5h 1m

Solar UV radiation in Ilomantsi, North Karelia, Finland §

Ilomantsi experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 6, which corresponds to the Moderate / High category of sun exposure.January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Ilomantsi UV Index data.

Average daily maximum UV levels by month for Ilomantsi, North Karelia, Finland.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 1 3 4 5 6 6 5 3 2 1 1