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Monthly climate in Kortesjaervi, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Kortesjaervi features a subarctic climate (Dfc). Temperatures typically range between -6 °C (22 °F) and 17 °C (63 °F) through the year, but rarely can drop to -28 °C (-18 °F) or can rise to as high as 32 °C (89 °F). The average annual precipitation amounts to about 689 mm (27.1 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually. Kortesjaervi enjoys an average of 3189 hours of sunshine throughout the year, and daylight varies from 4 hours 44 minutes to 20 hours 14 minutes per day.

Monthly average temperatures in Kortesjaervi, Finland

The warmest months in Kortesjaervi are June, July and August, with daily mean temperatures ranging from 15 to 17 °C (59 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -3 °C (22 - 27 °F) throughout the day. On average each year, Kortesjaervi experiences 13 days above 25 °C (77.0 °F) and 155 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Kortesjaervi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum7°C
(45°F)		6°C
(44°F)		10°C
(50°F)		21°C
(71°F)		28°C
(83°F)		32°C
(89°F)		32°C
(89°F)		31°C
(89°F)		23°C
(74°F)		20°C
(68°F)		11°C
(53°F)		5°C
(42°F)
Mean maximum4°C
(40°F)		4°C
(40°F)		8°C
(47°F)		15°C
(60°F)		24°C
(75°F)		26°C
(80°F)		28°C
(83°F)		26°C
(80°F)		20°C
(69°F)		15°C
(59°F)		9°C
(48°F)		4°C
(39°F)
Average high-3°C
(28°F)		-3°C
(27°F)		2°C
(35°F)		7°C
(45°F)		13°C
(56°F)		20°C
(68°F)		21°C
(71°F)		19°C
(67°F)		14°C
(57°F)		7°C
(45°F)		3°C
(37°F)		-1°C
(30°F)
Daily mean-5°C
(23°F)		-6°C
(22°F)		-2°C
(28°F)		3°C
(37°F)		9°C
(48°F)		15°C
(60°F)		17°C
(63°F)		15°C
(59°F)		10°C
(50°F)		5°C
(41°F)		1°C
(34°F)		-3°C
(27°F)
Average low-7°C
(19°F)		-9°C
(16°F)		-6°C
(21°F)		-2°C
(29°F)		3°C
(38°F)		10°C
(49°F)		11°C
(53°F)		10°C
(51°F)		6°C
(44°F)		2°C
(37°F)		-1°C
(30°F)		-5°C
(24°F)
Mean minimum-22°C
(-6°F)		-21°C
(-6°F)		-19°C
(-2°F)		-10°C
(15°F)		-3°C
(27°F)		4°C
(39°F)		5°C
(42°F)		4°C
(39°F)		-0°C
(32°F)		-8°C
(19°F)		-10°C
(14°F)		-14°C
(8°F)
Minimum-28°C
(-18°F)		-26°C
(-15°F)		-28°C
(-18°F)		-15°C
(5°F)		-5°C
(24°F)		-1°C
(31°F)		3°C
(37°F)		3°C
(37°F)		-3°C
(27°F)		-11°C
(12°F)		-16°C
(3°F)		-23°C
(-10°F)

Compare climate in Kortesjaervi with other places

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

Monthly average precipitation in Kortesjaervi, Finland

Kortesjaervi usually has the most precipitation in August, September and October, with an average of 14 rainy days and 81 mm (3.2 inches) of precipitation per month. The driest months in Kortesjaervi are January, February and March. On average, 39 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Kortesjaervi. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)37 (1.5)40 (1.6)41 (1.6)44 (1.7)61 (2.4)56 (2.2)63 (2.5)88 (3.5)70 (2.7)86 (3.4)58 (2.3)47 (1.8)
Average precipitation days (≥ 1 mm)10811101010121513141113

Monthly sunshine hours in Kortesjaervi, Finland

The sunniest months in Kortesjaervi are May, June and July, when the sun shines an average of 15 hours 29 minutes a day. Least sunny months in Kortesjaervi: January, November and December receive an average of 1 hours 45 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Kortesjaervi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours371412643554425024794052651708538
Mean daily daylight hours5h 48m8h 41m11h 49m15h 2m18h 10m20h 14m19h 5m16h 4m12h 54m9h 45m6h 41m4h 44m

Solar UV radiation in Kortesjaervi, Finland

Kortesjaervi 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 Kortesjaervi UV Index data.

Average daily maximum UV levels by month for Kortesjaervi. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112456653211