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Monthly climate in Oulainen, Finland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Oulainen features a subarctic climate (Dfc). Temperatures typically range between -7 °C (19 °F) and 17 °C (63 °F) through the year, but rarely can drop to -33 °C (-27 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 710 mm (27.9 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually. Oulainen enjoys an average of 3108 hours of sunshine throughout the year, and daylight varies from 4 hours 15 minutes to 20 hours 55 minutes per day.

Monthly average temperatures in Oulainen, Finland

The warmest months in Oulainen are June, July and August, with daily mean temperatures ranging from 14 to 17 °C (58 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -4 °C (19 - 25 °F) throughout the day. On average each year, Oulainen experiences 13 days above 25 °C (77.0 °F) and 167 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Oulainen. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum6°C
(43°F)		6°C
(43°F)		10°C
(50°F)		21°C
(69°F)		28°C
(82°F)		31°C
(87°F)		32°C
(90°F)		32°C
(90°F)		24°C
(75°F)		20°C
(68°F)		10°C
(50°F)		5°C
(41°F)
Mean maximum3°C
(38°F)		4°C
(40°F)		8°C
(46°F)		14°C
(58°F)		24°C
(75°F)		26°C
(80°F)		29°C
(84°F)		26°C
(79°F)		20°C
(68°F)		14°C
(57°F)		8°C
(47°F)		4°C
(39°F)
Average high-4°C
(25°F)		-4°C
(25°F)		1°C
(33°F)		6°C
(43°F)		13°C
(55°F)		19°C
(67°F)		21°C
(71°F)		19°C
(66°F)		13°C
(56°F)		6°C
(44°F)		2°C
(35°F)		-2°C
(28°F)
Daily mean-6°C
(21°F)		-7°C
(19°F)		-3°C
(27°F)		2°C
(35°F)		8°C
(47°F)		15°C
(59°F)		17°C
(63°F)		14°C
(58°F)		9°C
(49°F)		4°C
(40°F)		-0°C
(32°F)		-4°C
(25°F)
Average low-9°C
(16°F)		-11°C
(13°F)		-7°C
(19°F)		-3°C
(27°F)		2°C
(37°F)		9°C
(48°F)		11°C
(52°F)		10°C
(50°F)		6°C
(43°F)		2°C
(35°F)		-2°C
(28°F)		-6°C
(21°F)
Mean minimum-24°C
(-12°F)		-23°C
(-9°F)		-21°C
(-6°F)		-11°C
(12°F)		-3°C
(27°F)		3°C
(37°F)		4°C
(40°F)		3°C
(37°F)		-1°C
(30°F)		-8°C
(18°F)		-13°C
(9°F)		-16°C
(3°F)
Minimum-33°C
(-27°F)		-26°C
(-15°F)		-28°C
(-18°F)		-14°C
(8°F)		-5°C
(24°F)		-1°C
(31°F)		2°C
(37°F)		1°C
(35°F)		-4°C
(24°F)		-13°C
(10°F)		-19°C
(-2°F)		-22°C
(-8°F)

Compare climate in Oulainen with other places

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

Monthly average precipitation in Oulainen, Finland

Oulainen usually has the most precipitation in August, September and October, with an average of 14 rainy days and 84 mm (3.3 inches) of precipitation per month. The driest months in Oulainen are January, February and March. On average, 38 mm (1.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Oulainen. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)38 (1.5)39 (1.5)38 (1.5)40 (1.6)59 (2.3)57 (2.3)74 (2.9)93 (3.7)76 (3.0)83 (3.3)61 (2.4)50 (2.0)
Average precipitation days (≥ 1 mm)108109109111613151212

Monthly sunshine hours in Oulainen, Finland

The sunniest months in Oulainen are May, June and July, when the sun shines an average of 15 hours 22 minutes a day. Least sunny months in Oulainen: January, November and December receive an average of 1 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Oulainen. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours371322653504344964844002651427027
Mean daily daylight hours5h 26m8h 31m11h 49m15h 10m18h 32m20h 55m19h 33m16h 16m12h 56m9h 39m6h 23m4h 15m

Solar UV radiation in Oulainen, Finland

Oulainen experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 Oulainen UV Index data.

Average daily maximum UV levels by month for Oulainen. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112356643211